One thing I learned when putting the wheat in is doing this with fingers is rather unproductive. Assuming you don't have power, the only seeder I have found mentioned that is human powered is the Earthway Precision garden seeder. Cumberland General Store has it, 800-334-4640.
Offered by John.
The seeder I prefer is round with a long spout and a clear plastic cover that rotates to select different window sizes for different sizes of seed. The problems I had with the Tiny Tim seeder are that you cannot easily control the number of seeds dispensed. My red colored seeder with the long spout requires more handling but you can control the number of seeds leaving the spout by simply tipping it accordingly.
Offered by Roger.