Place painted foam board in the back of the bookcase, giving the look of a painted bookshelf w/out the commitment. Love this idea for a small book shelf next to couch. Good way to use yellow without committing to it in a big space.
Linen Closet: Roll with It. Save space in a shallow linen closet by rolling up towels instead of folding them. Put lost space to use by installing towel racks on the back of the door to hang wrinkle-susceptible linens, such as tablecloths.
DIY Outdoor Solar Light Display : 2 fence posts + 4 solar outdoor lights + 8 extra long screws + an long scrap of treated x wood. great idea for the deck or patio! Would probably use nicer solar lights!