I've helped fund a few Kickstarter and Indiegogo campaigns, mostly tech stuff to satisfy my inner geek. Haven't been burned yet, although some of the projects when delivered were really in alpha rather than even beta stages of development, which leads to a bit of frustration..
I helped fund the Almond+ touch screen router, its a base for my home automation, after working some bugs out, software and firmware updates, its working smoothly.'
I got a reader for CAN information from OBD cars..
Got some really good earbuds
Helped fund a Iphone sized drone which was ultimately cancelled (money was returned)
Waiting for another drone