I've suggested this before already but here it is :
Why toolboxes (and lunchbox?) are not like other "bags" which stores items and can be opened with a single rightclick?
It would be much easier to deal with them if they were like that. So we could easily store all our agriculture/mining/building tools and maybe armor inside it.
Lunchbox would be similar to toolbox but only accepts food items and health/regen potions.
The problem is that that would look too much like Forestry bags, which are OP.
Maybe something like a bag, but only allowing certain items inside would be best.