I do have a "cactus mix" with a couple different kinds of un-labeled seeds (most appear to be moss rose size, but lighter in color, but some are larger). I also should be getting some prickly pear cactus seeds in the mail this week (the kind with spines). I sent off a trade earlier this week with someone, so I should be getting "Summer Cider" tomato seeds as well.
Quick update: the acorn squash turned out fantastic! I just tossed some butter and brown sugar in. Little #5 couldn't get enough fast enough! Even picky eater #1 liked it. I think I'll be picking up another acorn squash next time I'm at the grocery store.