I grabbed one 24 oz (pint and a half) ball mason jar, a reusable straw from another tumbler (you can also buy them at Target or Starbucks for super cheap,) and a drill with a 5/16 drill bit on it.
The process is pretty self-explanatory, and I forgot to take pictures during that! But after drilling the hole right in the middle of the lid, I filed it down with sand paper so it was nice and smooth then I painted it this adorable little mint green color with a hint of glitter!
This project cost me less than 5 bucks, and I see these things sold online for 20+ bucks. Totally awesome, easy, and fun. Hey… maybe I should start selling them for that much on Etsy 😉