This is a shower caddy for holding your near-empty shampoo bottles upside-down!Many modern shampoo bottles have a flat top that allows you to set it down top-side-down. Unfortunately, the brand of all-natural crunchy-granola urban-hippy shampoo that I use does not have such a top. I either cannot get to the last little bit of shampoo or I have to do something creative with the bottle: balance it, wedge it against something, or do a quick centrifuge-style flick of the bottle. None of these work all that well in the dim, pre-coffee hours of the morning.I then decided to take matters into my own hands and design a shampoo caddy to hold my shampoo and conditioner upside-down. The main features are cylindrical holes to hold each bottle and a wide, flat base to help keep everything upright. At the bottom of each bottle-gripping cylinder is a draining hole that links up with a draining trough running to the front of the caddy. The whole thing works pretty well and can be reconfigured to your brand (and more specifically, geometry) of shampoo.Simply print and use! You might want to bump up the number of additional shells to make sure the diagonal is nice and water-tight.My original OpenSCAD source file is attached. It is fully parameterized. See the attached drawing to determine which variable is which dimension. Remember: you'll want an extra few millimeters of tolerance between your shampoo bottle size and the hole size.