Just popped out to 24hr Tesco and made one up in a single 25 litre bucket and lid (OK it used to be for home brew, but since emptying my loft completely, and not refilling it; I'm finding loads of stuff
Mine just has:
Cat Litter - absorbs smells and liquids
Toilet paper
Baby wipes
Pine discinfectant
Discinfectant wipes
4 Bars of soap
Hand wash
Roll of wash cloths
Pack of disposable gloves
Roll of strong rubble bags
Got some other things to get but it's a start.