Any advice on making coasters out of left over tiles?

[potplant]

I have recently had some black slate flooring put down and have some pieces of it left over. The tile has cut a couple of pieces into smallish coaster size squares. I was thinking that they would make great coasters in my rustic type kitchen but not sure what to do with them. i know I would have to put some kind of backing on it so it doesn't scratch the worktops but haven't a clue where you but it or how you stick it on.

Anyone have any ideas?

I did this, just glued felt to the bottom

disclaimer: I am not crafty, at all.

they are still giong strong and look fab

Thanks MamaG. I'm not very crafty either so I was quite pleased with my idea.

Second felt, I have done this and they are fine.

Alternatively, you can buy little plastic dots that you stick on and they work as little feet.

Felt cheaper and easier though...

Third big up for the felt - I did this with some really cool mexican coloured glazed tiles years ago. Simple, quick & looks great!

Wilkinsons sell little cork feet with adhesive on one side (cheaper than felt) which I used on the bottom of ours (we brought a few tiles back from a holiday once deliberately to make into coasters)

They're fine after 3+ years...

I have used a type of self-adhesive felt paper before. It was cheaper (in the educational catalogues)then normal felt.