Top Tube Bike Box

I took this on the Great Allegheny Passage and it worked well. My cell phone is a Samsung S20 with a silicone case, and acts as the top of the box. I can put my wallet or a snack in the box for quick access during the ride. At stops I would take the wallet and phone off and put them in my pocket. Its not for every occasion, but worked well for me on the trail. I printed it in PETG with 15% gyroid infill so that it can flex when putting the phone in or out. No supports are needed. Two conical standoffs are needed to raise it above the straps for my frame bag, with the wide end up to support the box.