I wanted to throw out a few ideas for your consideration/amusement based on some observations from this years ride.
1.Several of the pass-thru towns had set up cables stretched between tractors for riders to hang their bikes on as best they could. Usually folks hooked their brake levers or drops over the cable, and it occurred to me that a water bottle cage zip-tied upside-down to the head tube would provide an easy “hook” at the right height and no entanglement issues.
2. This year I wrapped reflective foil tape around my water bottles. This alone kept the water cold much longer as it simply reflected the sunlight rather than the bottle acting like a little greenhouse. If you really want to go all out, wrap your bottles with foil-faced bubble pack. I got some funny looks but also had cold water all day.
3. Consider a kickstand. I know they weigh something but why pay $3000. for a bike and then lay it down in the mud every time you stop. One guy, when I asked why he didn’t use one said, “In a race every ounce counts”. Hmmmmmm.
4. One place that was selling fruit smoothies had 4″ PVC tubes filling the inside on of their garbage cans for stacking empty cups. Genius. Seems like a great idea for any place selling anything in a cup. Most of the overflowing trash cans in the towns were overflowing with plastic cups.