What can you do with 10 minutes and $10?
Begin with a naked window.
Go buy yourself some clearance dishtowels.
Install some kind of $3 curtain rod.
I used one shaped like this: [ so that it can be completely hidden.
Drape your towels over the rod.
Notice that your watch says you still have 2 minutes to spare.
Think about sewing them but quickly decide against it.
Check out the queen of window mistreatments here.