DIY: Mason Jar Cups by Kersey Campbell Share this story These mason jar cups are a hit with both kids and parents! They're really fast, easy to make, can be re-used are almost spill-free! And the best part? No drilling! You'll need: Mason jars with lids Strong hole punch Straws Remove the lid (into two parts) Find a good place on the top to your lid and punch! Punch two more holes really close to the first hole to make the opening for the straw round-ish and big enough to fit the straw. Insert your straws and you're ready to party!