Here's the link to the TSA's Prohibited Items list:
https://www.tsa.gov/travel/security-...ohibited-items
You can bring scissors only if their blades are 4" or less. Greater than that must be checked. I bring my Gingher 4" knife edge scissors on planes because the blades are only 3". You need to measure from the screw to the tip of the blade; I'm pretty sure Dressmaker Shears are way too long. You can bring the handle for your rotary cutter, but blades must be checked. Pins & needles are all fine. To Peggi's point, I also once had difficulty bringing a latchhook on board (for making rugs). The Security people didn't know what it was & wouldn't even let me toss it because then I got labeled a threat. I spent 20 minutes demonstrating how it was used and waiting for them to look it up on the web and get clearance from a supervisor before I was allowed to continue to the gate. So ... if it's some kind of specialty tool that a non-crafter might not immediately be able to identify, I'd pack it in your checked luggage. Not sure if you need to bring any starch/sizing, but if so, I'd either ship it or buy a small container of powdered corn starch and an empty spray bottle; you can mix your own using the coffee pot found in most hotel rooms.
Sometimes you can call ahead to the hotel & ship your items there to be picked up when you check in. I did that once for an informal quilt gathering in FL. Better option than having to catch a cab into town only to find out that all the other out-of-town quilters in your group already bought up the store's entire stock of scissors or rotary blades (which might have only been 2-3 units).