I needed wall/ceiling holders for my fishing rods, but none of the models I found quite fit what I wanted—so I made my own. It’s optimized for low material use while keeping good strength. Photos show fishing rods, but it works for almost anything up to Ø30 mm—e.g., broom handles, cables, pipes, umbrellas, rolled mats, etc. 

• Max recommended item diameter: Ø30 mm
• Internal clearance: 32 mm
• Countersinks for screw heads: Ø11 mm × 3 mm deep
• Through-holes for screws: Ø5 mm (choose screws/anchors suitable for your surface)
• Extra “driver holes” make it easy to drive screws straight or slightly angled with a slim, long screwdriver
• Generous fillets for strength and a clean finish
• Flat back for solid contact — prints flat on the build plate, no supports