I built a portable grind box (hope this belongs here) : r/skateboarding
6ft Skateboard Grind Box by OC Ramps – SkateBoardRails
DIY Skate
Amazon.com: 5 Packs DIY Fingerboard Kit with Box Mini Fingerboards with Mini Wrench Screwdriver Brackets Screws Wheels for Teens Adults Finger Skateboard Kit Finger Board Making Fingertip Movement Novelty Toys : Toys
How to build a skateboarding GRIND BOX (Easy and strong!) - YouTube
DIY Grind Box : r/NewSkaters
South Bay Skate Co - Basic Mini Skate Park Set by Keen Ramps – South Bay Board Co.