I have made laminted mats for the children, but if you wanted to do them in material you can get some special sort of printable material that you iron on (Joanna used to sell it - and can't think of the proper name) - you just have to remember to reverse the image before you print it on the special fabric paper and then you cut it out and iron it onto the fabric.   I haven't explained that very well, but we did a load of T-shirts as party gifts for one of the grandchildren's parties with it.

Mags