Kerr Half-Pint (8oz) Mason Jars, 12 Pack are perfect for making and preserving jams and jellies. However, you will be surprised at all the uses you will find! Kerr Half-Pint (8oz) Mason Jars, 12 Pack are the perfect size to hold beads for kids crafts (bracelet making) to hold stray buttons to organize a desk (paperclips, thumb tacks, rubber bands) and so much more! These are often found for 50 cents each, so I think they are a great bargain. I like to fill them with colorful marbles, rocks or even sand and add a votive candle on top. The heavy glass can withstand the heat making these perfect table decorations for parties. The seal and ring fit tight, sealing your canned goods and stand up very well to the canning process. I also like to fill them with candies, colorful skittles or red and green M&M's and tie with a festive ribbon for an inexpensive, but fun gift for co-workers. Kerr Half-Pint (8oz) Mason Jars, 12 Pack are perfect for any household, whether you can or not, you will be happy with these jars.