I wanted to try this but had no t-shirts I wanted to get rid of – I did, however, have a pair of horribly holey yoga pants that I didn’t want to part with but Kit pointed out they were not decent for wearing outside the house. FINE, fine, idea strikes – use those for the baby hat!
Each leg was almost the perfect fit (I trimmed some) for an adorable hat on an even more adorable model:

