rolling mill cover?

Does anyone know where I might get a hard (probably plastic) cover for my rolling mill? I have always used a towel held in place with clothes pegs to keep dust off, but I have just had a too close encounter with wee micey who had decided to make it his home. My scream was so loud I expect he got a bigger fright than me, and my neighbour came running to see if I was being attacked.

Hello Jodie

That conjures up a funny image!! I've just got a rolling mill so will be interested to see if anyone has any god ideas. At college they just had a cardboard box over it on the bench, but I suppose your mouse would probably like that too!! :D