Sowing tiny seeds in neat rows can be a tedious process. Often you will oversow them then need to heavily thin things out later. This is wasteful and inefficient.
There are lots of commercial devices to help but they can be expensive and often don't work very well.
I came up with this after seeing a similer device in a catalog for $80 and thought I could make it cheaper.
You will need:
1) A Sonicare or other sonic type toothbrush (You may be able to use other types of electric toothbrushes I just happened to have a Sonicare)
2) A single slat from a vinyl mini blind
3) A rubber band