Fluffy Bed Recommendation

A couple of my buns really love nice cosy beds (they aren't chewers).

Most bunny marketed ones are quite small and although my buns are small these only look suitable for baby buns not adults.

I was thinking a cat or kitten bed might be better. Ive seen one which has a microwavable bean middle which I know they'd love as they are also fans of snugglesafes. However I'm thinking this would be impossible to wash.

Anyone got any recomendations? I want something cosy I can chuck in the machine when needed.

I got a couple of small dog beds off the market for my two buns. They don't chew the beds so they seem okay. They are nothing fancy rectangle of fleecy material. The cover does come off and go in the machine though so v handy. They were £5 each