Other ideas include:
Terrariums - teacups, wall terrariums, holiday-themed terrariums, sand art terrariums, etc.
Mosaics - trays, coasters, shelf standers, broken glass art, etc.
Macrame - wall hangings, hanging planters, bracelets, etc.
Decoupage - boxes, shells, trays, jewelry holders, lanterns, pumpkins, etc.
Glass painting - stemmed or non-stemmed glasses, lanterns, trays, etc.
Resin designs - jewelry, keychains, trinket dishes, suncatchers, etc.
Wool felting - animals and holiday decor
Polymer clay - earrings, miniatures, dishes
Bath bombs - great for gift-giving!
And many, many more ideas for your next get-together!