Small and moderately important. Almost none of it would qualify as "great sentimental value", but I can't say they're not important to me at all. Especially my penguin collection. I got a couple of plushy Tuxes from trade shows many years back, and several of people in my family became convinced that I was collecting penguins, so they started giving me any penguins they found. I wasn't, and am not, collecting penguins, but it turned into a nifty little collection despite my lack of effort, and I'd miss it if it disappeared.
The Star Trek DS9 action figures were given to me as a joke. Which is all that needs to be said about that. :)
The Bruce Campbell action figure is rather a treasure. Even if it's (or perhaps especially because it's) Autolycus, King of Thieves, rather than Ash.
The rest is just doo-dads, but fun doo-dads.