My Quaker loves plastic stuff. The cheap plastic, neon colored rings in shapes that you can get at the dollar store that are made so that little girls can "make a bracelet" by slipping them together is his favorite foot toy, and his favorite toy overall is a cheapo disco ball made for budgies that you can get at petsmart. He also likes plastic mirrors and mainly ignores the nice (aka expensive) wooden toys I bought him unless I've turned it into a foraging toy. Definitely get a variety! I bought a bunch of wood toys at the start and probably won't need any more for a long while since I got so many and he doesn't love them, but the toys he likes the best come from the dollar store. (I guess he just likes the feel of slippery plastic--he's not big on "destroying" things unless it has food inside, and once he gets the food he is done.) He also loooves himself a mirror and likes chewing on textured things (sandy perches, bark perches.) I would get something like this to start off with:
1 cardboard foraging toy (could make yourself out of a toilet paper tube)
1 puzzle toy
1 shiny toy
1 plastic toy
1 mirrored toy
1 rubbery toy (one made for birds so they won't be able to chew it to bits in five seconds then swallow pieces--Sammy's favorite rubber toy is meant for larger birds. It's a giant rubber "skeleton" of a ball with a bell inside. It's as big as him but I hung it on his playtop and he loves knocking it around)
1 bark perch
1 sandy texture pech
Some bendy straws
Some of that woven "ribbon" made for birds to chew up
Then you can see what he likes the best and get more of that!