Plastic confetti bundle (plus some sequins)
A classic use for these: glitter bomb. A more earth friendly alternative: static glitter bomb (glue them to a sheet of paper in a haphazard way, then let the recipient know they've been static glitter bombed and that the static glitter bomb can be reused.)
These beads come in a reused resealable bag. The bag used to have other beads in it. Hooray for reusing!