Seedling Pots, Holding Grid, Soil Compressor & spike

I modified the pot bases as the existing ones were too small and fell out of the pots too easily. I made them .5mm wider on each side.
I modified the holding grid, to be stronger and to print a little faster. I removed the curves and filled in the unnecessary holes.

I only needed the 30mm tall pot... so If you need a taller one, get it from the original poster.
The 30mm pot is more than enough for the seeds that I need to germinate.