Had to show you what we do for a travel mug. I posted a new MADE IN USA item on the blog a few blogs back called the Cuppow. BPA free lid for a mason jar.
But, if you already have straws, jars & plastic lids, you can drill a hole in your lid & you are good to go
juswingit 
That’s a good idea!
We love our traveling mugs even for just in the house to reduce that unforeseen spill! Thanks for sharing the idea years ago!!!
Great idea! I didn’t know it was this easy to make a travel mug. Hope you are doing well. Email me sometime. xo