Tag but in the dark.
Glow sticks with wrist/neck loops (available from Amazon)
Each beaver has a glow stick.
The beaver who is 'it' has a unique colour glow stick
Usual rules apply - when a beaver is caught they swap glow sticks so the new 'it' has the unique colour'
Remove any unnecessary obstructions (chairs, tables etc.) and tripping hazards
Stand a leader next to any unmoveable obstructions to prevent collisions (e.g. cupboards)
Keep a helper by the lights so that they can be switched on quickly