We all love our cordless drills.  So much that making holes, screwing, and bolting are not enough.  So we look for other hacks that let us take pleasure in the power of rotation.  Many of these hacks either use the drill as a generator or as a nice small powerful motor.  The chuck, gears, and speed controller may also be of interest.   Some may be useful for a drill that has lost its full function.  So make a lathe, troll for fish, grind pepper and go nuts...  Hack away.  ( note: some of  these hacks may also be used with a corded drill)  If you are interested in keeping your cordless drill running see the guides:  Cordless Drill Repair - Add a Cord    and or  Cordless Drill Battery Maintenance .
and all are now a member of the first collection of collections Cordless-Drills-A-Collection-of-Collections
Just a quick hack, 30 seconds and then ready to use.
325 6
Extract a powerful fairy low speed low voltage motor.
34K 486
Sanding glass is less than standard, but perhaps useful.
25K 58
Not a joke, this works.
31K 216
This hack only uses the battery.
21K 394