I don't eat at my desk, but I do like having a mug of tea or cocoa when I work, so I keep a lot of mug mats (fabric coasters) on hand. This one is my favorite:
Most of my mug mats aren't this ornate, but this one is special, and quite old. About a month ago I handwashed it as I usually do when it gets soiled, and it simply shredded and fell apart from age.
I should have thrown it away; anyone else probably would have. Instead I spent two days sewing it back together, reinforcing the old cloth and beading it around the edges to make it extra-sparkly. Which was very silly, I know, but when something is precious to you, you do things like that.