I love this idea so much more than the typical "Mommy Loves Me" variety.
Perfect for the spit-upper and drooler alike!
Plus they are so easy to make... I just raided my basket of fabric scraps.
(warning, I am not very good at giving instructions)
First, raid your scrap basket... or cut up old tshirts. flannels, even cute sheets. Just be sure at least one side is soft and absorbent.
Cut two pieces of fabric, one for each side into an isosceles triangle (how do you like that 4th grade geometry?), the long side measuring 17in and the two shorter sides measuring 12in.
Sew them together, right sides facing in as you would a pillow case, leaving about 2in on any side open so you can turn it right side out.
After turning out, poke the corners out, fold and pin the open 2in, then iron.
Sew around the entire perimeter, about 1/8in in from the seam.
Attach some snaps or velcro, and voila!