There's a lot of vegan dark chocolate out there, if you want to send something sweet. Maybe some pure maple syrup, since a lot of vegans don't use honey. I know if someone sewed me a pretty, functional, washable apron I would be most delighted, and I think most crunchy moms could use such an item. Or maybe some herbal sachets? Or a flax seed eye pillow with some lavender buds inside? Bath oils are also really easy - just pick a base like almond or grapeseed and add some fragrant oils, like lavender or chamomile. Hope this helps!
I should probably be doing something else right now.