Customizable Bike "Trunk" Container Adaptor

As a Father's Day gift for my bicycle riding dad, I made him a custom designed container to hold a half-flat of strawberries (or whatever else he wants to bring home). It uses a 3D printed adapter pieces to slide into the bike rack behind the rear wheel, and connect to whatever container you want with 1/4" bolts and lock nuts. A carabineer keeps the container from sliding back out the rack.

I used a Sterilite 4 Gallon Stacker Tote in my example, but nearly any container can be bolted to the