Potholders/Plant Mats made by my 11 year old son

You might remember making these potholders on square looms as a kid and now the craft lives on through my son! He is making these ~5x5 squares to earn money for Magic the Gathering cards as it's his new favorite thing. I personally find these too small to use as a potholder, but I have loved having them as 'plant mats' as I have a number of plant pots without a drainage hole and it's nice to give them a little coaster.  Each potholder is unique!