Glow sticks

Small luminous sticks worn or carried at nighttime events.

S03 E08Photograph not available Still from Frank Sets Sweet Dee on Fire

S03 E08 · 2007-10-04

Frank Sets Sweet Dee on Fire ↗

IMDb8.4/10
Seen at 14:12

Bright green glow sticks are attached around Dennis’s waist on the dance floor.

These are researched occurrences. More may exist in episodes whose tags are still being documented.