I think tapestries are key in achieving the maximum boho-cozy-Tumblr-esque space.
Who doesn’t want that? Especially at this time of the year.
Both of these tapestries can be purchased from Urban Outfitters for $34.
I scavenged the web to find these two that aren’t so bad, but, tapestries can get pretty pricey. Naturally, I still managed to find a way to save my precious pennies.
I got this scarf from Ardene a few years ago (I probably paid no more than $5 for it). Despite the size, it looks almost identical to the ones from UO. Scarves are a staple accessory in the fall, so I have no doubt you will be able to find one of perfect size and pattern for your own oasis.
Another alternative idea is an old bedsheet (bonus points if you paint your own).