The acrylic is a perfect product to draw/write on anything you like. Use waterproof pens, you will be amazed how many of your pens will stay on acrylic. Try gel pens as well, glitterglue etc. Always clean the acrylic before you go draw or write on them. Of course, self adhesive gemstones are a product that are great on them to. Use your imagination and doodle talent this time.
These are some other examples of the doodling on acrylic, I used they outside shapes.
ACR: Seedlings - Fluoro Green
Have fun with decorating your acrylic pieces. Turn them into small artworks.