So I've been considering putting my Beats Pill (bluetooth speaker) on my road bike so that I can listen to tunes while I ride (when appropriate). I find earbuds can prevent me from hearing potential danger around me and the speaker straight from my phone is just not strong enough to hear at any reasonable speed.

Anyone got pictures of how/where they mounted theirs? Advice on a mount to buy, etc, etc? My speaker isn't too different in shape and size from a water bottle so I'm wondering if incorporating water bottle cages that I already have could work.