I recently Visited Bali..
Must see attractions are
Tanah Lot Temple
Bedugul Temple
Ullu Watu Temple
Kintamani
Lake Batur
Water Sports Activities in Benoa
Bali Museum
Monkey Forest
Kuta beach nd Night Market
Garuda Statue
Here are some adventure you could try
Boating at Nusa Lembongan
Rafting at Payangan
Kite surfing at many beaches
Diving at Manta point.
Some offbeat gems to explore
Car temple in Nusa penida island
Kawah ijen volcano mountain
Underwater temple garden at Pemuteran bay
Caving at spelunking
Abandoned theme park at Sanur
Nusa dus blowhole beach where surfing and seafood is great.