A ‘river’ table but with yoyo’s. Plus the guy who didn’t even invent the river table is trying to TM or patent it.
Or the tallest stepped water fall feature or trickle down fountains…
Mini lamps, one half per led lamp.
Wind chimes or rain gutters.
Yoyo stands for yoyo’s.
Hub cap centers for car wheels.
4 or 5 and a sock for beating non yoyo’ers down.
Some wild rube goldberg machine. Water wheel paddles?
Christmas tree ornaments.
Single serve sushi dishes. Or 6-7 on a tray for sushi, soy, and wasabi.
Sink knobs.
Melt em down and pour them in an ant hill/bed. Edit: aluminum ant hill castings at DuckDuckGo
Mini Thai spice plate. Yo Yo this is Native Thai.
Disabled pet cart wheels.