How about "advanced amusements, gadgetry, builder kits, and hobbyist supplies"? One wouldn't want to inadvertently age-box anything by implying any particular

How about "advanced amusements, gadgetry, builder kits, and hobbyist supplies"? One wouldn't want to inadvertently age-box anything by implying any particular position on the toddler-geezer age axis. Kids of sufficient skill can think of themselves as "advanced", and adults of sufficient budget won't think they're blowing it all on "toys".