How about all metal Tonka trucks.
Dad built a cement block out building when we were kids. He would try to get 3or 4 courses of block laid on one corner every weeknight then do the walls between on Saturday. Dad was an accountant/auditor, he did not lay block fast. Especially since before he could mix mortar he had to dig all of our Tonka trucks and tractors out of the sand pile.
Someone mentioned the Six Million Dollar man, how about lunch boxes with thermos with your favorite tv characters on the lid.