The Knit Picker is a handy tool that you should have in your notions case. It can repair snags on knitted, crocheted or woven fabric. The little latch on the hook secures the snag or dropped stitch so that you can pull it to the inside of your project and forget about it (snag) or secure it (dropped stitch). Use it to integrate zippers into your knitted/crocheted garments for a great finish. See Eunny Jang demonstrate this technique on YouTube.