Something that's worth it? Buy me some reddit Gold then.
But seriously, there are a ton of great stuff you can get out there for Rs 1000.
1.) Get a premium VPN service
2.) BitTorrent proxy - Worth it believe me, makes torrenting a breeze, you know for when you want to download legal stuff like linux distros ;)
3.) Jar of Nutella and a box of Ferrero Rochers
4.) Upgrade your internet connection
5.) Buy an Arduino for open-source hardware or better a Raspberry Pi, if you willing go a bit higher, you won't regret it.
6.) Buy a few hardcover editions of books you know you will immensely enjoy
7.) If you are into beer, I suggest you go to a microbrewery in Bangalore like Toit with a couple of friends