Just managed to find a bike myself now for one of my Sims. And yes, it was for some reason also not marked as owned by them (as in, the "Put in Inventory" option was greyed out with the usual "Your Sim does not own this" message).
However, I did manage to find another workaround that seems to cause the game to realise that it is indeed supposed to be owned by your finders keepers Sim (causing the aforementioned option to work) by bringing the bike to your lot, have it placed somewhere within your borders, go into build mode, sell it and then undo that.
Yes! This also worked fine in my game! I found a slug in the dumpster and could not pick it up again after placing it in the world as it said my Sim does not own it. Selling it and undoing that worked. My Sim can now put it in their inventory. I noticed that all items from dumpster diving are not marked as owned by the Sim who found it which also makes it impossible to sell those items. It is really frustrating.
I think this is another report with the same issue: https://answers.ea.com/t5/Bug-Reports/ECO-JA-Household-Does-Not-Own-Item/m-p/11428051#M212043
I've had such a frustrating couple of days trying to add these items to my retail lot from dumpsters again. I have 6 of the bikes found specifically for my outdoorsy store. I've had them in and out of so many inventories so many times but now that's not fixing it. They keep returning to the personal inventory and I keep seeing that my Sim doesn't own them. Even after my Sim sold the retail lot where I'd finally got them to stay on the display. 2 days after selling the store they were returned to her inventory. They must be the most bugged items in the game. Selling them from my inventory and then hitting "undo" will be difficult due to "undo" no longer functioning properly after the January patch that wrecked console controls, but I'll try that tomorrow.
They even popped up in her inventory when she was on vacation in the jungle and it wouldn't allow me to leave them at her vacation home to stop her riding them everywhere. They don't go through the jungle portals and she couldn't put them back in her inventory, so she was trying to ride them through the portals and it wouldn't let her through on the bike.
omg ty this worked!!
