Some Studio Tools
Some of the tools I use in the studio for similar purposes:
From left to right in photo:
A bamboo skewer (like for making kabobs). I use it to smooth down fabric under the presser foot or to help make a bag (turning right-side out, getting the corners aligned). Its length is sometimes helpful, but also it is flexible. If it snaps I have more in the kitchen. A caution: it is very pokie and can poke through the fabric.
"That Purple Thang" which so many of us have. I use it for similar purposes as the bamboo. The plastic is flexible and tends not to snap. It glides easier too, but sometimes the pointy point of the skewer is what I need instead of the blunt end of this. I do like the 1/4" square here, as it is a wider area to hold some fabric down, esp when I'm sewing over seams.
Porcupine quill - this is pretty useful, one end is sharper than the other. Mostly I use it to unfold a seam I'm sewing over without taking the whole quilt out from under the needle. It is flexible. I like that the very pointy end is a small area, so if I stitch over it, the needle doesn't hit it. (The above two can damage the needle. Yikes.)
A lone chopstick (child-size). When I lost its pair, this moved into the studio. I use it mostly when I'm making bags, coasters, placemats, etc or I need to turn something right-side out. It is not flexible at all, but both ends are smooth plastic. The pointier end can get in the corners easily without poking holes in the fabric or project.
A wooden spatula. This also moved from kitchen to studio. The flat end is beveled and I use it when turning something (coasters, bags, etc) right-side out to "unbunch" the seams from the inside. I also use it to help flatten seams after pressing (whether to the side or open) or even to press seams if the fabric is delicate.