In the morning, head to Solang Valley for paragliding, ziplining and trekking. Enjoy a thrilling experience of skiing and snowmobile rides in the afternoon. At night, visit the Solang Valley market for a little bit of shopping and tasting of local food.
Start early and head to Hampta Pass. Once you reach the top, enjoy the panoramic views of the Himalayas. Afternoon, trek back and try out river crossing and rappelling. Relax at night with a bonfire and stargazing.
Embark on an early morning trek to Beas Kund and witness the breathtaking view of the Beas river. Trek back, and in the afternoon, visit the Jogini waterfall and hot springs. Spend your last night in Manali exploring the local market and trying out the local cuisine.
Other attractions you may consider are Naggar Castle, Manali Sanctuary, and the Rohtang Pass. For a side trip, visit Kullu and explore the temples and local markets. You can maximize fun by trying out camping and river-rafting.