My favorite mistake was Pinmoors. If you don't know what they are, google them. I paid a whopping $40 for a set of 50 yellow ones. Turns out, they are not as easy to use as illustrated on the website. They are hard to push into the pin, at least for me and some of my pins buckle under the effort. I rarely use them and would gladly return them but too late for that. Let me tell you about one of my favorites, the Sip-n-snip. It is a gadget that went to my quilting weekend and I love it. You attach it to anything, table, cabinet, machine, etc. It holds a 32ounce bottle or large glass and has a scrap bag attached that is very easy to empty. This one was worth the money, about $25.