I dedided to make some of my own so I trimmed branches off my Mexican Plum and made a 4n1 Plum with Santa Rosa, Burgundy, Green Gage and Mexican.
These are cleft grafts and are very easy to do. I cut a slit down the middle, cut the donor wood into a wedge, stick it in so it matches up with the edge, wrap with a rubber band and then wrap in parafilm tape.
I also put some wax on the cut to protect it from water penetration.
Here are some pictures of the Pineapple Quince that I grafted two Asian Pears and an Apple.