I tried the new bobbin tower that Nancy Zimmerman came out with. It has about 6 rows that the bobbins snap into. The thread is contained, you can see the color of the thread and there are no tails hanging everywhere. The rows are rubber disks that snap onto each other so it can stand up where ever you want it; next to your machine, in a drawer or basket, etc. Most "gagets" I buy work, but not very well. I am really impressed with this. I write on the side of the bobbin with a permanent pen the thread weight.