I am on several mailing lists and I get freebees that way. Last year, I gave my mom laundry soap samples, hand lotion samples, and some WildLife Federation blank note cards.
My dad was more difficult. He got some granola bar samples, a power bar sample and some pens.
DH got a computer mouse pad and pens and a water bottle from a trade show I had attended.
Trade shows are a good way to get freebees. Pens, pencils, mouse pads, water bottles, keychains, t-shirts, food samples/goodies., etc.
BTW, I don't go around "looking" for trade shows for this reason, lol. I just happened to attend one and they gave you a bag at the door and vendors handed out lots of stuff! DH is in education and may go to one this fall.