I've had a lot of interesting swag over the years... laptop bags, jackets, toques, hats, watches, etc...
I think my favorite swag though came from EnCana almost 15 years ago now. The gave me a set of Zwilling J.A. Henckels steak knives with their logo subtly engraved on them... I still use them today, and they are amazing.
I've more-or-less lost most of the other swag I've gotten.