Recently returned to Neopets as well.

Like what others said, a couple of things i do daily
1) Trudy's Surprise. 18-20k neopoints daily to fund for my stock market purchases
2) Stock market (buying in 1000 stocks at 15 everyday, and selling them after they hit 30++ or more)
3) Battledome. Personally killing Koi Warrior for codestones everyday. Otherwise if you're very new, maybe S750 Kreludan Defender Robot