We all have those friends (or maybe even people who live with us) that love staining the table with glass marks. Now you can be honest in a funny way. Perhaps it is a little passive-aggressive but still in a polite manner. With these coasters, you will leave the message clear, and people will leave your table clean.
If you're in a search for a present for a stoner who likes Pokemon then this is the best thing you can get them. Made out of high quality metal to get the best results possible. They'll most likely forget who they got it from but will surely appreciate it and use it a lot.