Old Elementary: Eero Okkonen's ball turret and deltoid | New Elementary: LEGO® parts, sets and techniques
Tips&Bricks - #423 TECHNIQUES - LEGO Geometry Some things in LEGO just work, and some don't. These connections can be incredibly satisfying and interesting, so let's look at two cases where LEGO
LEGO Green Ball Hole Sports Dodge Bionicle Sphere Marbled Dark Green Light | eBay
ArtStation - LEGO® Sphere
LEGO MOC Sphere by El-Kapibara | Rebrickable - Build with LEGO
Brick, Round 2 x 2 Sphere with Stud / Robot Body : Part 20953 | BrickLink