One of my favorite things in my therapy room right now is my sticker maker.
Yes, a sticker maker. It looks like this:
I got mine at Michaels, but you can get it through Amazon or any craft store. It is a snazzy, little machine that has motivated my students when the thought of cutting/glueing has lost its "wow" factor. It comes with a cartridge already in it, but I purchase additional cartridges as I need them. The refills cost around $15 (where I am), but I usually make sure I have a 40% off coupon! The refills just drop right in.
One word of caution: make sure you tell students they they can crank the handle, but you have to be the one to rip off the strip when it comes out the other end. I've learned that lesson the hard way. If kids pull it out too fast, the cartridge can get all sorts of tangled. Otherwise, you stick a piece of paper in, crank the handle, and voila: a sticker.
Sometimes I use this as a motivator (say 5 words, make a sticker). Sometimes I take articulation pictures and cut them out to stick onto bags or paper. For whatever reason, the kids get a kick out of this!!
What's your current "must have" item in your therapy room?