diff --git a/gaehsnitz/admin.py b/gaehsnitz/admin.py
index da8eb38..e7a84dd 100644
--- a/gaehsnitz/admin.py
+++ b/gaehsnitz/admin.py
@@ -1,8 +1,202 @@
+from decimal import Decimal
+from typing import Union
+
 from django.contrib import admin
+from django.contrib.auth import get_user_model
+from django.contrib.auth.admin import UserAdmin
+from django.utils.safestring import mark_safe
 
-from gaehsnitz.models import Payment
+from gaehsnitz.models import Donation, Payment, Drink, Consumption, Payback
+
+User = get_user_model()
 
 
-@admin.register(Payment, site=admin.site)
+def euro(value: Union[int, float, Decimal]) -> str:
+    return f"{value:.2f} €"
+
+
+class DonationInline(admin.TabularInline):
+    model = Donation
+    extra = 0
+
+
+class ConsumptionInline(admin.TabularInline):
+    model = Consumption
+    extra = 0
+
+
+class PaymentInline(admin.TabularInline):
+    model = Payment
+    extra = 0
+
+
+class PaybackInline(admin.TabularInline):
+    model = Payback
+    extra = 0
+
+
+@admin.register(User)
+class CustomUserAdmin(UserAdmin):
+    list_display = ("username", "balance")
+    ordering = ("username",)
+    list_filter = []
+    fieldsets = (
+        (None, {"fields": (
+            "username",
+            "password",
+        )}),
+        ("BALANCE", {"fields": (
+            "donations_made",
+            "consumed_drinks_price",
+            "other_payments_made",
+            "paybacks_received",
+            "balance",
+        )}),
+    )
+    readonly_fields = (
+        "donations_made",
+        "consumed_drinks_price",
+        "other_payments_made",
+        "paybacks_received",
+        "balance",
+    )
+    inlines = (DonationInline, ConsumptionInline, PaymentInline, PaybackInline)
+
+    def donations_made(self, user: User):
+        return euro(user.donations_made)
+
+    def consumed_drinks_price(self, user: User):
+        return euro(user.consumed_drinks_price)
+
+    def other_payments_made(self, user: User):
+        return euro(user.other_payments_made)
+
+    def paybacks_received(self, user: User):
+        return euro(user.paybacks_received)
+
+    def balance(self, user: User):
+        val = user.balance
+        if val < 0:
+            color = "#FF8844"
+        elif val < 20:
+            color = "#EEEE33"
+        elif val < 40:
+            color = "#66FF33"
+        else:
+            color = "#5599FF"
+        return mark_safe(
+            f'<span style="color: {color};"><b>'
+            f'{euro(val)}'
+            f'</b></span>'
+        )
+
+
+@admin.register(Donation)
+class DonationAdmin(admin.ModelAdmin):
+    list_display = ("date", "from_user", "amount", "note")
+    ordering = ("-date",)
+
+    @admin.display(ordering="amount")
+    def amount(self, donation: Donation):
+        return euro(donation.amount)
+
+
+@admin.register(Payment)
 class PaymentAdmin(admin.ModelAdmin):
-    list_display = ("topic", "amount", "date", "other_party",)
+    list_display = ("date", "purpose", "amount", "from_user")
+    ordering = ("-date",)
+
+    @admin.display(ordering="amount")
+    def amount(self, payment: Payment):
+        return euro(payment.amount)
+
+
+@admin.register(Payback)
+class PaybackAdmin(admin.ModelAdmin):
+    list_display = ("date", "to_user", "amount", "note")
+    ordering = ("-date",)
+
+    @admin.display(ordering="amount")
+    def amount(self, payback: Payback):
+        return euro(payback.amount)
+
+
+@admin.register(Drink)
+class DrinkAdmin(admin.ModelAdmin):
+    list_display = ("name", "purchase_price_per_crate", "crates_purchased", "purchase_price_total")
+    fieldsets = (
+        (None, {"fields": (
+            "name",
+        )}),
+        ("crates", {"fields": (
+            "crates_ordered",
+            "crates_purchased",
+            "crates_returned",
+        )}),
+        ("bottles", {"fields": (
+            "bottles_per_crate",
+            "bottles_total",
+            "bottles_returned",
+        )}),
+        ("amount", {"fields": (
+            "bottle_size",
+            "amount_per_crate",
+            "amount_total",
+        )}),
+        ("purchase", {"fields": (
+            "purchase_price_per_crate",
+            "purchase_price_per_bottle",
+            "purchase_price_total",
+        )}),
+        ("deposit", {"fields": (
+            "deposit_per_crate",
+            "deposit_total",
+            "deposit_refund",
+            "deposit_kept",
+        )}),
+        ("sales", {"fields": (
+            "sale_price_per_bottle",
+            "bottles_sold",
+            "sales_purchase_value",
+            "sale_price_total",
+            "bottles_given_away",
+            "giveaway_purchase_value",
+            "balance",
+        )}),
+    )
+    readonly_fields = (
+        "bottles_total", "bottles_returned",
+        "amount_per_crate", "amount_total",
+        "purchase_price_per_bottle", "purchase_price_total",
+        "deposit_total", "deposit_refund", "deposit_kept",
+        "bottles_sold", "sales_purchase_value", "sale_price_total",
+        "bottles_given_away", "giveaway_purchase_value",
+        "balance",
+    )
+
+    def purchase_price_per_bottle(self, drink: Drink):
+        return euro(drink.purchase_price_per_bottle)
+
+    def purchase_price_total(self, drink: Drink):
+        return euro(drink.purchase_price_total)
+
+    def deposit_total(self, drink: Drink):
+        return euro(drink.deposit_total)
+
+    def deposit_refund(self, drink: Drink):
+        return euro(drink.deposit_refund)
+
+    def deposit_kept(self, drink: Drink):
+        return euro(drink.deposit_kept)
+
+    def sales_purchase_value(self, drink: Drink):
+        return euro(drink.sales_purchase_value)
+
+    def sale_price_total(self, drink: Drink):
+        return euro(drink.sale_price_total)
+
+    def giveaway_purchase_value(self, drink: Drink):
+        return euro(drink.giveaway_purchase_value)
+
+    def balance(self, drink: Drink):
+        return mark_safe(f"<b>{euro(drink.balance)}</b>")