Ava here. I had this great idea for coaster’s made from some old cards. Here is how you make them.
Step 1: find some old cards. I used some old flash cards with princesses and diamonds on them. You will also need felt for the back. The sticky kind works best.
Step 2: Trace the card around the felt.
Step 3: Cut out the felt.
Step 4: Peel and stick the felt to the card.
Now you can use it for a cold cup, like when it leaks, you can put it on there and it works perfectly.