It’s a good idea to save jars before tossing them in the recycling bin. Always wash jars and lids with soapy water. Be creative. Use self-adhesive labels and print, write, or use calligraphy designs. The kitchen police won’t arrest you for using mix-match jars. Save plastic containers labeled 1, 3, 6, and 7 for buttons, nails, rubber bands…, but not food.These containers are for one-time use once you consume food.