A remix of TheWortLord's wonderful Method soap dispenser tray, resized to fit the smaller 300ml bottles that are about 80mm wide at the base.

It's a pretty close snap fit for me, so depending on how tight your printer's tolerances are you may need to print 1% larger or smaller.

Monoprice

Maker Select Plus

No

No

0.2mm

10%

After printing, press the legs into the holes in the bottom of the tray.