a belt for weighted pull ups and some dumbbells that take olympic weights- like this:

http://www.amazon.com/Olympic-Dumbbell-Handles-sold-Pair/dp/B002OB2BT6/ref=sr_1_cc_2?s=aps&ie=UTF8&qid=1405023319&sr=1-2-catcorr&keywords=dumbell+olympic+weights

but i think you can get them cheaper