it took 2 months to construct this functional concrete bike from old bicycle parts
Weekend Project: Build your own DIY electric bike for under $500
Metal DIY Assembly Mountain Bike Bicycle 3D Model Kit Collection
Amazon.com: 2023 New 51 Pcs DIY Retro Bicycle Model Ornament For Kids, Creative 1:10 Simulation Mini Bicycle Model Scale Kit With Inflator and Briefcase, Finger Bike Models Toys For Desktop Decoration Ornament :