Looks like they would work good. Very clever! My Dad made me a wood one. It is like a wood base with little dowels sticking up. I just wanted one big enough for 3 or 4 spools of thread & some bobbins for whatever project I was working on to sit next to my machine. I have one by every machine. The dowels hold several bobbins. It works very well too. My Dad is a woodworker & does a lot of scroll work, but he is 89 & loves to do smaller simpler things now days so this fit the bill.