Hmm well I use different things according to the rabbits so here goes
Petey = foam sofa (spoilt bunny :lol: )
Jess = Plastic dog bed, no liner though as she chews or wees on it as soon as its inserted.
Twinkle & Louis = soft furry dog bed
Timmy = Cuddlecup rabbit bed
Emily = vet bed inside a catbed
all are house buns and live in a spare bedroom which they have to themselves and it is lined with Lino, the 2 smallest buns (timmy & Emily) have a rabbit cage 100 each as the havnt yet been neutered so cant share.