DIY Mini Succulent Planters:: Tiny jars (repurposed baby food jars? Or the little jars some of the Burt's Bee's creams, like the banana one, would work) wrapped w/ twine & a label (which could have the plant's name if not being used as a favor), filled w/ a mini succulents (Available via TheSucculentGarden on Etsy: www.etsy.com/shop/thesucculentgarden)
Glow in the dark pots with mums for fall/Halloween. Buy a flower pot that you really like and use Rustoleum's Glow-in-the-dark paint to paint the pot. During the day, the paint will absorb the sunlight and at night the pots will glow.