Our product is not a physical object, and we don't offers services, so types of rewards we can offer is very limited. I looked at all the past Kickstarter and Indiegogo campaigns for software related products for some inspirations.
Most of them had some sort of services or physical accessories that worked with their apps, so their reward models don't work for us, but I found one successful software campaign that could work for us:
The campaign was for an app that allows you to record 1 second of everyday of your life and turns it in to a long video. Their campaign offered a lot meetups, parties, skype chats, etc with their founder. Their goal was $20,000, and they ended up raising over $50,000. So I decided to take the same reward model.