Nos - I was thinking of varnishing them and hanging them on the walls like art. They are 3/4 of an inch thick! But you could do them on thinner wood to use as place mats!
Actually If you want to do place mats, skip the wood burning and paint or stencil them on paper or thin cardboard and laminate them, most print shops will do that for you!
Static - You could borrow my wood burner or ...just tell me what one you'd like!
Here's my Night Owl! I think he came out a little better.
, on Flickr