So please forgive me if my tool count is wrong here. But we have several specialized containers. The spice rack has room for all 16 types of spices, the element pouch contains spaces for all the elements, fine and dandy.
But then you have the Toolbox, which contains tools. And it costs 501 currents more than 16 slot bag and holds the same amount of stuff. But by my count, we have 25 tools in the game that players would reasonably want to carry around at all times (excluding fancy versions):
Hoe, Watering Can, Hatchet, Bean Seasoner, Bubble Tuner, Fruit Changing Machine, Spice Mill, Gassifier, Knife and Board, Blender, Frying Pan, Saucepan, Cocktail Shaker, The-Boxer-Formerly-Known-As-Mike-Tyson-Grill, Awesome Pot, Pick, Grinder, Scraper, Shovel, Alchemical Tongs, Test Tube, Tinkertool, Smelter, Beaker and Meditation Orb.
Now, not all of us are going to be in every profession at every time and a 25 slot box would be far too big to even fit on the screen. But given the toolboxes' higher price and the restriction that it can only carry tools, it would be nice for it to be say, a 20 slot box instead. That would be enough for most of us to not have to worry about getting to the next street project with bags full of resources then realize the one thing you needed was that scraper you left in your closet at home...