Haba walker wagon - can't say enough good about this. I bought it for my 5yo when he was a baby and it has been in constant use since. 9m old dd pushes it around the house all day. It does not tip when she pulls up on it. It still looks brand new.
Strider balance bike - again, can't say enough good
small Wheely Bug
Blocks and Marbles marble run (Amazon)
Mama to Henry (01.07), Catherine (09.11), Audrey (04.14), Clare (09.15) and our newest addition, coming July 2017!