There are many optional tour can be taken in Bali, this list of activities can be taken during tour.
Rafting USD 55 (Include return transfer, lunch)
Day Cruise USD 85 (Include return transfer, lunch)
Sunset cruise USD 40 (include return transfer, dinner)
Semi-Submarine USD 85 (Include return transfer, lunch)
Batur Volcano Trekking 65 (Include return transfer, Trekking Tour Guide, Light Breakfast)
Sea Walker / Ocean Walk USD 80 (Include return transfer)
Waka Land ruise USD 86
Waka Sea Cruise USD 86
North Bali Dolphin Watching USD 85 (Include transport, boat, lunch, and visit some destination: Hotspring water, Bedugul, and Tanah Lot)
Coral Fishing USD 105
Trolling Fishing USD 125
Pakage:
Flying Fish + Jet Ski + Banana Boat or Donut Boat USD 75
Flying Fish + Jet Ski + Turtle Island USD 75
Flying Fish + Jet Ski + Ocean Walk USD 120
Flying Fish + Jet Ski + Ocean Walk + Banana Boat or Donut Boat USD 135
Flying Fish + Jet Ski + Parasailing USD 75
Flying Fish + Jet Ski + Ocean Walk + Parasailing USD 135
Jet Ski + Parasailing + Banana Boat or Donut Boat USD 65
Jet Ski + Parasailing + Banana Boat or Donut Boat + Ocean Walk USD 125
Spa Treatment
Choose 1 of treatment below with only USD 30 or IDR 350.000:
2 Hour Wine Spa Package
2 Hour Balinese Massage
2 Hour Shiatsu Massage
2 Hour Stone Massage
Cooking Lesson (Price based on venue and food learned)
Yoga, Cycling, Trekking, and other with a reasonable price.