There are several avenues to selling crocheted blankets.
Here are a couple of articles I wrote with some advice on selling handcrafted items Ebay Review
and Crochet for Cash
. If you have made the items yourself you can also sell on etsy, here is some info for that site, Etsy Review
. Hope that helps
Any avenue you take will take some time. It always does but Christmas is coming up now would be a great time to put them out there.
Another option is donating the throws that don't sell to homeless shelters and/or domestic relief shelters. They are always in need of ways to stay warm. Good luck.