Micro greens

I am thinking about starting a project to grow micro greens.  I might start with sunflower seeds.  They sprout easily and are very nutritious.  I may set it up in the old greenhouse.  That should give it enough protection.  It is a quick way to have gourmet greens at my fingertips.  It would taste great with salads and add great nutrition to my green smoothies.  I just need to think of a cheap efficient container to grow them in.  I have some crab shell plastic containers that would work, but I would like a larger flat.  I could cut holes in the bottom of one of my plastic sprouting flats that I use for the garden.  That would give me the size that I want.  Hopefully I’ll find time to get started this week.