What to do after placements?

Hey, i belong to a tier 1 nit, got placed early, my all friends are still unplaced. I feel i am kinda lucky i this domain. Leave this out, i will be earming like 1 lakh per month, that will be sufficient for me ig in ggn. That's tha backstory.

I am just so bored and got nothing to do now. Was preparing for placements for past 10 months. ( ps of 2025 batch).

All working people what are things you regret that yous should have done and What would you recommend me to do.