I don't like this one, it's kinda ugly, but I like the idea. DIY Sweater (mini) skirt - can be as short or as long as you want, depending on the size of the sweater you use to start. Definitely want it snug though I think, so take in the sides if need be.
DIY bra straps for backless tops (*this is actually a great idea. especially when your bra strap has worn out. You could make different pieces for different occasions and interchange them because of the Velcro.
26 Brilliant Ways To Repurpose Those Ratty Old T-Shirts
How to make your own cardigan: Take a shirt, cut down the middle, iron hem tape to the edges and done. Great way to re-purpose shirts that don't fit anymore.and great idea to make kid's clothes go a bit further!
33 Clever Ways To Refashion Clothes (With Tutorials)