I give a $20 gift card to the local grocery store day of move-in so tenants can stock up on a few staples or pick up something ready-to-eat from the deli.
I have given wine, but you need to be careful & not assume everybody would welcome such a gift. A lot of people don't drink for a variety of reasons & may be rather put off by your assuming it's something they might like. (Send it to me in case you're not sure!)
I also add a little something to the property if the tenant has been prompt with rent, clean, etc. A programmable thermostat, receptacles that have USB ports; there are lots of things that improve your property, don't cost a lot of cash & are kind of nice to have.
One of my current tenants is using a rug I had in the house for staging; he's SUPER clean & it'll be well taken care of . . . & I don't have to store it!
So there are a lot of options - if you have good tenants, they will appreciate it & if you have bad ones, they wouldn't care if you gave them a gold-plated . . . anything.