Drop Seeder, Put those seeds in the soil quick

Thingiverse link now includes updated files, [ refined to reduce bolts and looks a little better] old files are still in the link for those that have already built, you just have to open a few more folders to get to them. 

Other open source farming tools: 

  Seeding related 

Dibbler 

https://hackaday.io/project/167679 

Drop Seeder 

https://hackaday.io/project/168051 

Vacuum Seeder