If you have a soda bottle, cut the top off and wash it out thoroughly with something that disinfects as well as cleans. 2 liter bottle will work great, but any others will do as well. Poke some holes in the bottom to drain and then cut the bottom off and tape it back on. This will make transplanting much easier! Fill it with dirt. if you are getting dirt from outside, bake it in your oven for a while to kill anything that might be living. Then put in one sprouted seed. You will need on container for each seed to grow properly.
BTW, if you don't have a soda bottle anything that will hold the dirt will work, even a shot glass! But you will need to transplant once it gets larger.
Or if you live somewhere where you can, plant them outside. Though this late in the season might not produce the best results, depending on where you live.