I have finally caved - I bought a small labeling machine to use at home. Christian has gone on and on about his love affair with this thing, and I thought he was being a tad too organized for his own good. Well, he is, but he is also right!
Ohmygod, I LOVE this thing! It was on sale for about $15, so it's not fancy - but I spent all of last night hanging out in the playroom, labeling the kids storage bins and art supply containers.
My 6 year old figured out how to use it in about 1 minute.