I just returned from a trade show. Most companies that had booths were giving away little branded items of some sort. Most were pure junk. However, I emerged with a few goodies:
-SS water bottles with mini-biners
-a variety of small items that had mini-biners on them.
Most of the stuff with biners was total junk, so I liberated the biners and abandoned the junk (not environmentally friendly, but most of this type of give-away ends up in the dump anyway. at least I found a use for part of it). I now have a handful of very small, very light biners... none of which are remotely load bearing, but would be good for little things like attaching an underquilt, hanging a light from the ridgeline, etc.
You never know where you'll find useful stuff.