These are great! I've printed 8 of them now for use in dry boxes. Would it be possible to get a license that allows derivatives though? I have a project to use these for the holder in a dry box using Sterile 20 qt bins. I made desiccant holders and a hydrometer holder that fit around the legs. I had to remix your feet though for the ends. Four of these fit perfectly across the bin but the triangles at the end of the feet caused them to be too wide. I cut about a quarter inch off and it works great. I was going to include only my feet in the project and link to here for them to download the holders.
If you'd rather not change the license, I'd be cool with removing the feet and giving you the stl to include here or doing a short write-up telling telling the user how to modify it. That last option puts a little more onus on the user than I'd prefer though.