I'd go with a yo yo quilt. Maybe a lap sized one. Put all that work to even more work and once done give it to that dear granddaughter. After all at 16 she is probably starting to think about college or other plans and could use a reminder of the wonderful grandmother she has once on her own. It also has extra special meaning since all those yoyos were made by the two of you in a sense. After all you both were there and she was the main inspiration behind them. Thats my thought of course Im feeling a little sappy today.LOL