Ink bottle support

I can be a klutz at times, and while I have yet to tip a bottle of ink onto my desk when filling a pen, I can imagine it happening. This adds a great deal of lateral stability to a Noodler's Ink bottle while filling a pen, to hopefully prevent catastrophic spills. 

I've added an adaptor sleeve to hold Robert Oster ink bottles. I designed a separate sleeve to hold Diamine 30 mL bottles, but then I realized that they fit fine in the Robert Oster adaptor, as long as you don't mind putting a square peg in a round hole, and there's no point wasting plastic on a separate adaptor.

I've added a sample tube adaptor, which will hold a tube upright, or at a couple different angles to make getting the dregs out easier.

2021-08-08: Added a base tray with a lip, so that if any ink does drip or spill, it should catch in a washable tray rather than on your desk. I printed it with 0 top layers, and 20% Hilbert Curve infill, to add extra capacity under the pyramid.

Printing in PLA, no supports.