Seems the most frustrating tool is............ seam rippers!
Perhaps it's because it's the tool we use the most after our machines
Mine is a seam ripper too. It lights up and has a changeable head to a needle threader. The ripper attachment cracked the first time I used it and now it doesn't stay on the end of the little torch light.
I bought a Seam-Fix and it's the greatest invention since the rotary cutter