Around my house there are THOUSANDS of bushes with these little orange berry things. I don't think they're edible, they might even be poisonous, but we collected them. which might have been illegal, but no one stopped us and we enjoyed their organic-ness. They turned out adorable.
Wal-mart's really stepping up their game in their plate design and I got the acorns, pre-cut and glittered at Michael's for 90 cents. I thought it turned out pretty darn cute considering my budget. Best party we've had in a long time. It was so fun. For details see here.