Introducing a clever and sustainable solution to repurpose your empty Creality NFC spools! This 3D-printed design transforms those empty spools into practical storage bins. With a simple 8-32 bolt that's three-eighths of an inch long, you can easily mount the storage bins onto the filament roll after tapping the plastic with threads, which is a breeze. The design includes three variations: a standard storage bin for miscellaneous items, a specialized bin for AA batteries, and another for AAA batteries. Keep your workspace organized while also reducing waste!