My uncle's birthday is around the corner ( two weeks to this time ) and I want to gift him something related to crypto, the last time we talked he is so interested in crypto and I told him to keep doing some research online, what do you think is the best gift for a 64 years old man? I am thinking about Doge coin or a Hardware wallet?
If you expect him to spend in the near future, then yes, hardware wallet is the way to go.
But I expect the elderly are not interested in new hardware and may have difficulties with a hardware wallet. In such a case you can generate on your own HW (or a an air gapped live OS) a new seed which you give to him (at least 2 separate copies!), along with an address - so kind of paper wallet(s) he can import in his hardware wallet in the future. And of course, fund that address for a good start.