The best replacement for placemat is charger.

The best alternatives to placemat are rated as following:
★★★★★  charger
★★★★  place mat
★★★  tablecloth
★  coaster

Your alternative for placemat is not listed? Suggest!
Speaking about placemat, one probably shouldn't forget about table setting.

Other search terms related to placemat and their ratings are:
★★★★★ table setting
You have in mind a companion for placemat and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of placemat in all years. Click on graph for more.
placemat
charger
place mat