A bowl of the right size and weight to prop up the jar. Some screen or netting and a rubber band, either nylon tulle from a fabric shop or gray fiberglass screen from a hardware store, will work fine. Seeds with good germination, preferably grown organically. Avoid purchased garden seeds unless you know they aren't treated. If you know a farmer who grows the seeds you want without chemicals, buy in bulk.
Most seeds keep for a year or more in a cool dry place.
Cover with mesh and secure with rubber band. Add water, swirl, and drain. Add 1 cup cool water and soak for 4 - 8 hrs. Rinse Twice a day, refill jar with cool water, swirl, and drain. Invert jar and prop at angle in sink or bowl.