Entertainment on Gili Trawangan:

Snorkelling with Glass bottom boat- Very cheap with a group of people, you get to see turtles, clams and many beautiful fishes. The rate should include snorkelling kits (without fins, fins cost extra $10,000RP)

Diving  - You get to see hammer sharks (which cannot be seen with snorkeling) and turtles in close distance.

Massage  -  "Permata Spa" (near Hotel villa Ombak) does great massages at reasonable price, makes you wanna go back again!

Shopping  - There are many hawkers selling pearls & other stuff on the beach, don't be afraid. The pearl they sell are Lombok pearls  Don't be afraid to bargin the price down!