I am so used to thread catchers by now, that I hate to be without them. This large one is always on my cutting board. I have filled them with sand from Walmart's craft department and added a bit of batting on top.
Because the table of my Janome 6600 is so slim, I made this one from the fabric Ruth brought back for me from Japan. I made it to fit onto the table. I took two kinds of Velcro. I sewed the top "sewing kind" onto the pincushion. Then I stuck the "sticking kind" to the table. Now it is both removable and secure.
Now I have purchased the awesome Sew Ezi table for my Bernina 1230 for quilting trips. That table also has a very slim edge, so again I made a small thread catcher for that.
I am not showing a tutorial because there are many out there. For example: http://sewmamasew.com/blog2/?p=765 or http://www.merrimentdesign.com/pincushion-thread-catcher.php or http://www.kquilts-studio.com/Kquilts_Studio/Pincushion_Threadcatcher.html