OK found your area on a 1974 Rand McNally Road Atlas - Yeah, quite a ways out from Rowlett, near Dallas.
Just make sure your seeds from the garden air dry at normal room temperature for a couple of weeks, then label them with a little slip of paper, put them in a zip-loc sandwich bag, and pop them in the fridge. Make sure they don't freeze. Normal fridge temperature is usually about 38 degrees F. or somewhere thereabouts. I've had tomato seeds that germinated 25 years after they were put in cold storage in the fridge. You just have to make sure that the seeds air dry at room temperature for 2 or 3 weeks prior to refrigeration so the moisture content of the seeds is not too high, or they may get moldy.
Any unused portions of your commercial seed packets can each be placed in a little zip-loc sandwich bag, and all the little bags can be put in a 1 gallon size zip-loc storage or freezer bag, and put somewhere in your regular fridge. They will keep for many many years.
