This is a simple parametric shower caddy anchor that uses a Nerf dart suction cup to keep the caddy stable. There are nine parameters that can be used to define the object, but if you're using standard Nerf suction darts and your shower caddy wire diameter is about 5.5mm, then the stl will probably work just fine for you. For me, this required about 285mm of filament -- about 5 cents.1) Print one or more of the anchors, tweaking the "user-defined values" if necessary to customize it. 2) Pull the suction cup(s) off of a Nerf suction dart (e.g. http://amzn.com/B00284C4FK -- or you can get them at places like Walmart) and clean off any remaining glue3) Attach dart head to shower caddy anchor as pictured, and install.