Shopping/Mouse/Gaming/MMO/Feature/Repairable Modular

• Similar to the spirit of Shopping/Mouse/Gaming/MMO/Feature/Open-Source Hardware, I'd prefer to have a mouse that can be modded and repaired. I prefer things that are built with the spirit of FrameworkCo products.
• I'd prefer one that has a Battery/AA to a built-in battery, since those can be replaced.