Print your picture out on plain paper, Take piece of wood and coat with mod podge, turn picture upside down on wood press and let dry overnight. next day using water and your hands rub paper off of wood (your picture will be on the wood) now cover with more mod podge.
this is one of my favorite crafts! totally diy-able Way cheaper than buying magnets. Easy and inexpensive. $5 for a bag of 100 or so peglass pebbles. Modge Podge scrapbook paper to the back of the glass and let it dry. Glue the magnets with E6000 glue.