I have a few. Being a total newb- I have all these grandiose notions of making knives for myself. I suppose it's a good problem to have, but customers keep interrupting. I need to sell to keep financing this hobby (full-time job hobby?) and pay for materials. So anything that is non-paid, (a knife intended for me), gets pushed to the back of the line.
I do have one knife that I consider a work in progress. It looked awesome on paper. Oh, man- I was so pumped. Then I profiled it into a blank and held it in my hand...and it immediately looked stupid. So I ground a little here, a little there, and now it's something entirely different. So I cut some scales for it and now I hate the handle shape. So it sits- waiting for a spark of inspiration on how to make it better- or for me to decide that it's consumed enough time, energy, and materials. I need to either finish it in hopes that someone will like it or just toss it and move on with my life.
The last botched knife became a shop knife and I use the daylights out of it. It's pretty much a sharpened blank and performs its job admirably (trimming abrasive sheets on the disc grinder).