I'm the wrong person to ask; I could generate a list that would go on forever!
As far as math manipulatives go, I wouldn't be without unifix cubes. I also like plain 1" wooden cubes; they have many uses. Rulers, scales, centimeter cubes, linker cubes, attribute blocks... there are more manipulatives, but those could get you started. Also things like beans, buttons, shells, etc..
For primary kids:
"Making Big Words"
"Words Their Way"
"Mosaic of Thought"
There are all kinds of great math explorations out there. I like Marilyn Burns, and TERC's "Investigations" stuff myself, but there is so much more!
I could go on, but I'll stop right here.