Gertmenian Icon Collection Farris Indoor Area Rug | Costco
Imprint CumulusPRO Professional Grade Anti-Fatigue Mat | Costco
Ultralock Black Perforated Garage Tiles | Costco
Costco (in Canada at least) has these sweet rubber mats that remind me of the gym. Way cheaper than Amazon since they are heavy as heck! It's flat on the other side :
Best Step Interlocking Comfort Flooring
Novaform Overnight Recovery 30.5 cm (12 in.) Gel Memory Foam Queen Mattress | Costco