I believe it is most likely that Staples can hook you up with some gaming chairs. If not, they can probably refer you to the right source. Just give 'em a call.
They have gaming chairs for adults..don't know how old your kids are but i didn't see any small ones.
I have only seen office chairs. Try Amazon, if they are not at Staples.
Those I have not seen in the store but could.be.online. Try Target.
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