Pretty much there are only two items I bought and feel was a total rip off . The first was the "glider" sheet for free motion quilting. What a waste. I didn't stick to my machine bed and more times than not, it got stitched to the back of my quilt! It was very expensive. I gave it to a friend who is just now learning free motion quilting but I warned her about its short comings. The second are those useless gloves that are supposed to help you move your quilt when free motion quilting. The minute you need to do anything beside quilt - the gloves are in the way. Not to mention they make my hands very hot. Martelli sells both "rings" and "paddles". Both of those produces are amazing and so glad I made those purchases!

I use the binder tool and also use it as a template to make chisel units.

I have fussy cut ruler things and never use them some other rulers also.

I do love my June Taylor strip cutter. Blades last longer and cuts much more accurate.

Which one? I have the Missouri Star binding tool and absolutely love it. The first couple of times I had to watch the video ... I made 9 mug rugs at one time and after binding those I have it down. It works perfect every time. Love it!

I use the Creative Grids folded corner clipper for binding and love it more than the MSQC one!

If you have a medical supply store nearby, they have lots of different types of cushions

Another yes vote for the Martelli round rotating mat. But I totally wore it out and about that time there was a sale on this square one. NOT.

Bias Bars, don't like them and won't use them.

Martelli Rotary cutters, for some reason they don't cut very well. I've watched the video several times and I just can't get them to work for me.

I also found the binder tool unnecessary. I watched a youtube video on how to do it w/o any special tool and it's easy.
But you can also use it for a template. I can't think of the pattern right now though lol