One of the coolest things I've done here is to try paragliding. Bir is thought to have the second highest rated site for paragliding and compared to the rest of the world it's pretty cheap at ₹2100 (about $35).
First you drive up a windy mountain road full of switch backs and deadly looking precipices. Then you wait while your pilot gets everything ready. Nothing is explained, and it all a bit nerve wracking.
Then, before you know it, you're being snapped into the harness and told that you're going to do a quick walk off a mountain. There is a slight jerk as wind picks you up and you're off!
The ride down takes about 30 minutes and it's amazing! Breathtaking and calming at the same time.
All too soon it's time to land. The pilot tells you to keep your legs up and (if you're me) you wind up as a less-than-graceful heap on the ground. If you're coming to Bir, I very highly recommend trying it!