I use all sorts of things to carry my knitting supplies in. My favorite things to use are lunchboxes. Plastic or tin both work fine. I like that each one is unique and fun. You can find them all over. They seem to be making somewhat of a come back. Although I'm sure not many of them are being used to carry around lunches anymore.
Another thing that I am using to carry my knitting supplies around in is this needle holder that mom made for me. She used two pieces of spare fabric, some ribbon, and a sewing machine. It took her about an hour and she didn't even need a pattern. She just started sewing away and came up with this.
There are two levels for storage of needles. I don't have that many needles right now but I'm sure that someday I will. Especially since I have been trying so many different types of patterns lately that require very different sized needles.