CombiCut Seam Rippers are the Best!
I bought my first one years ago at a fabric store that's no longer in business. I was very disappointed when I couldn't find a CombiCut locally. So I searched the web. Amazon had it but it was very expensive, almost 4 times what I'd paid for it in the store. Then I found it at Tooltron for a very reasonable price. I was so pleased to finally have the seam ripper that I liked best.
They're versatile and safe. The ripper is hidden away unless you're using it. The tweezers are perfect for pulling out those pesky little bits of thread left from using the ripper.
I've got this website bookmarked so I can find it again when I need a new CombiCut. I have a tendency to lose seam rippers; have had ever since I learned to sew when I was a kid.