Microsoft has these cool socks. My friend from google helped another friend prep for an interview at Microsoft. When they got the job at Microsoft they gave Microsoft socks to the googler. Like I know company swag is supposed to be visible. But sometimes it’s fun to have swag not many people will see.

If it's for employees and not potential customers/partners then you can go full functional!

Mouse pads, pens, notepads, letterhead. Coffee mugs, beer glasses, or water bottles depending on which beverage is on your perk list.

The corporate swag I've kept longest was a company-logoed duffel bag. I still use it whenever I travel.

Backpacks are always handy as well.

Real estate.