My pattern-oriented kids have loved pattern blocks, those wooden or plastic colored shapes. Here are some samples:
http://www.learningresources.com/p2...blocks&sortby=bestSellers&page=1They're good for art as well as math.
My two kids are also really good at finding 4-leaf clovers. We have over 100 in our dictionary, and it's not that our yard is gifted.
I've looked many times in the same places they're looking and have found exactly zero. It's not exactly a resource, but it's free!
Word searches and mazes were also popular for a while. I'll think about whether they're are others I'm not remembering right now.
