yup heated socks would be warm in whatever foot wear she chooses

If mrs fleaches is pretty handy the OP could just buy all the shit and let her do it herself

kind of like when you got the science experiment in a box or paint by #'s as a kid

but consider...

I put my boots on my MAXX boot dryer and crankup the fan while i have breaky

If a significant other said she wants a boot bag I would be asking her if she seen a good one she likes or asking the collective which one is good, buy her the fucking boot bag and be happy you...