During the Transformers boom, me and two friends salivated all over them.
My first friend's parents bought him all of them.
My parents bought me some.
The second friend's parents bought him none.
My first friend and I turned out mostly normal, but the latter friend is now a Transformers maniac, having finally achieved the money and ability to buy the toys that were so long kept from him
Other "booms" I had as a kid:
Legos (the bucket was nice)
Voltron (where did the darn lion heads go?!)
Model trains (and later, other plastic models) - chee, what an expensive hobby! (Sorry, mom and dad.) My lichens are probably gross now...