This would be a good DIY! Get plywood cut to order from your local hardware store. Mark the positions of the nails with something removable, like soap, fabric chalk or pencil. Then use the string of your choice to make a gorgeous sailboat.
DIY Tree Branch Seahorse **Mi(my) WAY: combine with the idea of the lit wood Christmas tree on the canvas, do any shape on the canvas then add lighting. Or weave lighting through out or around the seahorse or whatever u design.