My advice to all the CFIs looking for multi is to look around your field. Are there any MEIs? Are there weekend warriors or guys you see fly their own twins?
I was the only MEI on the field and lucked out. Several pilots had twins and one in particular had a B-55, but was scared to death of it. Stories ran rampant as to why, supposedly he came out of a cloud inverted, but back to the point. See if anyone needs a little refresher on instrument procedures in their twin, safety pilot, anything (even wash it if it'll get you some time). You may find that the pilot owner likes having an instructor along more times than not. You get paid and get the time.