Hi there, There are so many directions you can go, however, I would suggest you do some due diligence around a few areas:
1) what would someone be willing to buy
2) what would they be willing to pay for it
3) what would make it sellable

If you can clearly answer those questions, you'll have a better idea of what your business will want to sell.

Also, I'd like to suggest you rethink your numbers. Given what it will take in investment of time and money to create something that is sellable, you'll certainly want more than $35,000 for it.