Target or Walmart. You can also go to JoAnn Fabrics and buy fleece by the yard. It doesn't fray when it's cut so you don't even need to hem it and it literally comes in hundreds of colors and patterns. Two yards is nearly as big as a twin sized blanket so I let my kids go there to pick out their own blankets.

Target. I swear they make their throw blankets with the souls of bunnies.

Home Goods, TJ Maxx, JC Penney, Kohls

Costco.
They have tons of plush throws right now.

Do you have a HomeGoods nearby? I've had luck there when looking for throw pillows, sheets, blankets, etc.

We don't have a cashmere budget, to say that upfront, but I want to buy one or two new throw blankets to have around for cool mornings on the perch or snuggling while watching movies. Where did you buy your favorite soft throw blanket?