I made a tote bag to carry my notions in. It was a free pattern at byannie.com and it was really easy to make. It fits perfectly next to my sewing machine in my rolling sewing machine tote.
I have my regular sewing “tool” box for back up, but take anything special in one of the plastic food takeout containers. Makes it easier to use and takes less space.
I have my Tupperware Rectangular One next to my sewing machine with the basics in it. When I need to go, I just take the cover (which is under it) and put that on and I'm ready to go.
I use the little plastic containers from baby food for my pins. I make my own zippered bags for rotary cutter, scissors, extra blades, thread, and bobbins.