I recently bought a Ju-Ju-Be "BeLight" nappy bag as I had read that it was a great compact bag for babywearing. Very similar concept to the Onbag. It has straps that can be tied any way your choose. The BeLight is reversible as well, so kinda like two bags in one. I certainly am keen to have a go at making an Onbag though as they have a very good pattern on their site!