Abby, I totally understand not wanting to let go!
We pushed my mother on her's many a time, it is a very handy thing to have around. I keep her's in my SUV as a "just in case" I too have trouble in the stores. So I'll take any help I can get at this point. I've also thought about a travel chair, sometimes there aren't enough scooters around when you need them!
Your husband is so talented, I'm sure he could weld something for you! He made that fantastic rickshaw, it's so great I tell people about it all the time!

Keep inspiring! You have so much to share with others!
Rachel