PVC playhouse, just add sheets! My dad made this for my one year old daughter as a Christmas present, and it has been up in our living room ever since! I purchased some pink and white sheets at Walmart and strung some Christmas lights around the top!
Genius slipper design where you knit a short "scarf", fold and sew onto your bottom. Garter stitch extra chunky yarn about wide, and however many rows you need, then sew into the 2 layers of the felt bottom.