Nice job on those simple but very efficient mods.
I have always found that the four(4) small rectangular cushions fit nicely between the ceiling and the bottom, outer edge of the side shelves to keep most items in place.
BTW, netting from vans and SUVs from an auto wrecker can be recycled and the price is usually right.
Embark upon this journey with enthusiasm and eagerness.
If we were expected to remain in one place we would have been created with roots