9-Pack Thick Blocking Board Mats with 200 T-Pins and Storage Bag for Knitting and Crochet, 12.5 inches - Walmart.com
Amazon.com: KnitIQ Blocking Mats for Knitting Extension Kit
Best Blocking Mats for Knitters – ARTnews.com
KnitPro Lace Blocking Mats
I just found a super cheap alternative to blocking mats on Amazon and wanted to share. : r/knitting
Buy PUMEO 12" x 12" Blocking Mats - Pack of 9 Extra Thick Grid Boards for Knitting, Crocheting, Needlepoint - Complete with Reusable Storage Bag, 100 T-Pins and a Measuring Tape Online