I had to draft out the shape of the monogram relief myself on graph paper, but it really wasn't too difficult. Thankfully, the letter 'M', which is the first letter of my boyfriend's last name, was pretty easy as well as symmetrical, which is important because the coasters are meant to be reversible. The 'M' is in reverse-stockinette on the right side and stockinette on the wrong side.
The coasters are knit on #5 needles (mom's coasters were on #7 and I much prefer the tighter knit of the #5 for coasters) in my favorite yarn, Lily's Sugar 'n Cream. I didn't knit a holster for this set, it just didn't seem necessary.