This article is a big round up of coaster tutorials. It includes coaster tutorials for fabric, tile, and more. There are links and photos for all of these tutorials with additional resources for some of them.
Memory blocks or one that says DAD- I think this would be great to teach spelling and matching. Have blocks that have only pictures of thing s/people (I. mom, dad, dog) have them find hose pictures and then put the letters in order. And spell.