I received my Glowforge a few weeks back and I have been going ham working on gifts. Here are some.
Engraved on acrylic. Then washed with black or grey acrylic paint. After, details added with oils, or acrylic (Whale shark was all acrylic paint).
Enjoy! And feel free to let me know if you have any tip to make them better. I am still learning to be arts-y.