The Anvil 980 is a solid t-shirt option for print-on-demand with the right printer. It’s competitive in cost with a very good color range.
While your choice might vary based on your market and style preferences, of the t-shirts I’ve reviewed the Bella + Canvas 3001 is one of the best options for print-on-demand.
Printful and Printify both offer multiple POD blanket styles. I review 3 types with different fabric and finish styles. Check Gooten for even more options.
Printful has a nice range of bag and backpack options. They have good tools for the designer, quality construction, and reasonable fulfillment times.
Overall, the quality of the throw pillow covers from Printful is very good. They are easy to care for and last well with use. The inserts are average commercial quality at best but can easily be replaced.