Walking foot (AKA even feed foot). This is built in on some machines, but comes separate for most. A must for a straight line stitching enthusiast as myself.
Bias tape maker. I use a Clover 18mm for making all my bindings.
Basting spray. Some like this one, other like that. I’ll buy almost anyone, but there’s one that I do not care for at all.
Ottlite daylight lamps. I have a floor model in my studio and a chargeable table model upstairs. Proper light makes lots of difference, and when you get used to these, you really don’t want to do without.
Micron Pigma pens. For making thin lines and writing on labels.
Pre wound bobbins. I use Janome bobbins as I do my sewing on Janome machines and the empty plastic spools can be re-wound.
T-pins. Sometimes I have to shape up quilts for competitions and exhibitions, and the t-pins make that so much easier as they hold the quilt in place while regular pins will slip right out under pressure.
Jelly fingers thimbles. They used to be everywhere a few years ago, and fortunately I bought a few when they were easily available. I have tried many thimbles over the years, but these are my favorites as they’ll hug your fingers, not squeeze them.
Appliqué sheet. There are many brands and types, but this is the one I have been most happy with. When I don’t have an appliqué sheet, I’ll use baking or deli paper.
Self threading needles. A friend of mine recommended these for burying threads at the back of a quilt, so I bought my first in Birmingham two years ago. They are brilliant, so I stocked up this year.
Just to be clear: I don’t have any affiliation with Amazon, it was just easier to search one site, and I have borrowed their pictures - except for the thimbles and bias tape maker.
So, how about you, what are your go-to notions? If you post your own list, let me know, I'd like to see it!