We were truly in and out of the thrift store real quick - since G had to be to preschool by noon. I still managed to find some retro sheets - which always come in handy (pj pants, quilts, etc).
And best of all, I found some thrifted burlap. Well, it may not truly be burlap, since there seems to be a plastic-y coating on the back side, but it worked for the project I had in mind. After seeing this and this, I wanted to make my own burlap banner for Halloween (though I shamelessly copied the exact wording from my inspirations). I used freezer paper stencils for the letters, thrifted ribbon (the orange gingham) and buttons on the "Boo" one, and some polka dot ribbon on the Spooky one.