What are the plastic thingies called that you put under furniture to protect the carpet?

[SayItLoud]

I want to buy some but don't know what they are called!

Need to raise my son's bed by a few mm so his storage boxes fit now we've had carpet fitted in his room, and these seem as good a way of doing it as any, but can't for the life of me think what to search for on t'web.

Thanks!

sort of thing, you mean? Caster cups.

Ah, you're a star! Those are the ones, thanks very much!

Dated?

Lakeland always used to sell them, don't know if they still do......

The only thing is, they seem to be round-shaped and I'm not sure the bed will sit on them as they are smaller than the legs. Ah well, was a good idea but I'll go to to plan A of putting a block of wood under each leg.

Thanks for your help though.

Caster cups - you can get different sizes if you go to a junky DIY old fashioned kind of shop. I had them on DD's old bed and I got them for peanuts.