The Sims Bustin' Out Tips

Easy Money
Simply buy the incubator and make a bunch of mutants. When they grow, they will each be worth $500.

Edit: Added tip: Be really careful with mutants because THEY EAT YOU!!!!!

When you keep watering them and feeding them with your garbage they grow really big. They are worth 500simoleans then. If you keep on watering them when they are big after about three waterings they turn on you and they swallow you whole... It's quite scary...