After trying to imagine a way this would fail badly, I think you should make sure that whatever you do, you can remove it quickly. It's common for homemade electronics to get hot or catch fire, and you don't want to have any trouble getting if off your head if that does happen.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.