Random idea...not sure if your W likes perfume. I still remember being a kid 35+ years ago and my dad let my sister and I each pick out a bottle of perfume for our mom. I remember one of us picked a bright yellow bottle and one a glass purple one. I am pretty sure it was horrible perfume...it lasted forever...but might be cute to let your kids each pick something like that...then you pick out a bottle she really likes?
You could also ask your S what he thinks Mom would like. I bought my cheating husband a couple t-shirts and a hat because my D8 told me she thought he'd like a t-shirt.
I also agree that having them make her something would be really cute.
Hang in there...this is definitely a hard time.
M 44, H 46 D11, D9, D5 Married 12 years PA confirmed 9/2011 I filed 3/2012 H moved out 7/2012