Sounds like a home-made heatsink could increase performance for that device. And based on the photos of Daydream, I'd say there's room to install one... I thi

Sounds like a home-made heatsink could increase performance for that device. And based on the photos of Daydream, I'd say there's room to install one... I think getting good heat transfer connectivity might be tough (does that device get hot on the front or back?) and weight might be a problem.