I have a few:
Duplo: all the sets that were new were presents, everything I've bought was either from eBay or the charity shop
Children's shoes: always Clarks, but all bar 2 pairs so far have been either from the Outlet store or new from eBay (2 kids so have bought upwards of 15 pairs so far I think)
Toy cars: loads were presents and I've bought a grand total of 5. I try to make it a point of principle that I will not buy Hotwheels and the like, as we're never short - they just seem to find their way to us 😊