As always we need a few more details.
How many sound blankets? (And please don't stretch it/them tight; leaves
lots of folds!)
How much do they weigh? (Most run 5lbs. - 10lbs.)
How much area are you trying to control sonically?
What gear do you currently own? (C-Stands, mic stands, extra tripods, etc. What can you adapt?)
What else do you have available? (blankets, quilts, pillows, etc.)
and the most important one...
What is your budget?
*+*+*+*+*+*+*+*+*+*+*+*+*+*+*
My first suggestion is to RENT or BORROW.
Second suggestion - Use C-Stands. You can get 48" dowels such as those used for hanging clothes in a closet from Home Depot and similar places for about $3 to $5 each. That could easily handle two or three 10lb. sound blankets. 96" run around $15; should be able to hold four or five 10lb. sound blankets.
Add strength and durability by using the Waddell Hardwood Round Dowel. Offers consistent color and long lasting durability.
www.homedepot.com
You can splurge on some S-Biners or Spring LInks:
You can use Zip Ties if your budget is really tight.
I hope this has helped a little.
Peace,
Uncle Bob