I know it might sound stupid for some of you but there are people genuinely concerned erder with the heat their Chromecast produce. Let's crowdsource the design and prototype ccu cooler. Any opinions?
There are already designs that will work.
Is an example but it's a bit of overkill. Just a somewhat properly sized heat sink along with an adhesive thermal pad would probably be enough.
I've never had a problem with mine. If you're not having problems with yours then there is no need to do anything.
If you start having issues then it's under warranty and you can just RMA it. If you have zero issues during the entire warranty period I think it's safe to assume that there's no issue to worry about.