I seem to recall a discussion recently on preferred methods of having a bib fasten and I just yesterday came up with a solution I quite like. We have several "art smocks"--long sleeved to the knees bibs--those being the only thing that keeps us from having to change our daughter's clothes every time she eats. They all tie behind the neck, which is really inconvenient when said neck is pressed with all the might of that little body into the back of the high chair. I went down to Hancock Fabrics and got several...heck, I'm not sure what they're called...they're the barrel shaped fasteners you often see on outdoor gear. They work a treat on the bib strings. We just pop it over her head and a quick slide has the neck all fastened. MUCH better than anything else we've used!
Sue