I feel as though if you know someone is into something like Lego or something similar, getting them something completely offbrand from somewhere online, not opening the box it was shipped in, and then explaining the post said it was official and that you can’t return it because you ordered it a couple months back could work.

That, or if you are in scouts, you could try and pull what our troop did once for a white elephant gift exchange during one winter court of honor and get rid of an old tent. Our troop got new ones not that long before the event and an old tent was then added as a white elephant gift, probably from our scoutmaster at the time. I ended up trading with one of my friends for that tent rather than the dumb looking card game I had been saddled with. Either way, getting rid of an old tent this way feels a bit insulting to whoever gets it, to me at least.