Seeder This deceptively simple seeder will dramatically reduce the time it takes to drop seed.  It uses any compressed air source you can supply.   It picks up a single seed, including lettuce, and drops it exactly where you want it.  You place your index finger over a small hole in the plastic nozzle holder that creates a vacuum to hold the seed.  Remove your finger, and the seed is released.   It uses a very small amount of air, and comes with 3 needle sizes.  You can purchase an add-on nozzle holder with a fitting, tubing and needles to DOUBLE your seeding capacity.