Did you just call UNI token garbage? Those tokens were like 19k at one time, at current price $2k.
You could have searched it yourself instead of this ignorant remark.
People who came into the space most recently might not have an indepth knowledge of what has happened prior to now and what opportunities exists as a result of those transactions.
Just as the OP is leveraging on people not knowing the opportunities that lay in wait for their old wallets, same way people don't know what was earned prior to now through certain engagements in the space.
The OP didn’t specifically required any activity on the Uniswap and I doubt he is willing to purchase an address that he will share private key with the owner by just sweeping the unclaimed airdrop tokens since his minimum wallet age is just 6 months while Uniswap airdrop happened long time ago.
He probably use this wallets on testnet to receive future airdrop since testnet nowadays required old wallet to participate to avoid abusers to join using multiple wallet. It’s easy to check on blockchain explorer sll tokens contained by the wallet which I’m sure the seller will check before he will sold. The OP original goal here is for future benefits not claiming unclaimed airdrop although that can be a possibility in case the owner forget to claim.