I recently discovered the wonderful show, Knitting Daily, hosted by Eunny Jang. The tips and techniques she shares are a godsend, and have really helped me step up my stitch game.
I made the following coasters based on the pattern found here; I altered the pattern slightly as I was working double-stranded and felt the initial increases should be a little more gradual. Until I made these coasters, I was very intimidated about using increases & decreases in my knitting, worrying that I would ruin my work, but these turned out great, don't you think?
The coasters are available in sets of four for only $12. Feel free to request your own colors!
https://www.etsy.com/listing/156022804/diamond-shaped-knitted-coasters?