Check out these looms.
Butterflyloom.com
They are not your traditional looms, so even kids can do it. No up & down weaving through the different fibers. What you do is wrap the loom very easily & quickly with any colors & types of yarns, (makes it more versatile, especially for an art teacher,) then take a yarn needle & tie a knot at all the intersections. Items come out so much easier & faster.
There is a knotting demo for it here to show how easy it is:
http://www.thebutterflyloom.com/what-is-it.php
I actually used my photoshop program to copy, paste, enlarge to full size, a paper copy of the loom, (pic found on their product page.) Then I traced & cut a temporary copy of the loom on a piece of corrugated cardboard, to see if I wanted to buy it. I found that the yarns are so stretchy, I didn't even have to fold the loom in half to get the yarns off, once I knotted it. For me, this made my homemade loom more versatile, as I can make it whatever size I want, adjust the spacing of the pegs, or make other size looms out of cardboard later.
Since your DD is an art teacher, that is an option for her later, too. Maybe just buy one loom to get her going. Plus, she can make a bunch of cardboard looms, herself, and do it with her students.
For traditional tabletop looms, I have seen weaving forums out there, so you might want to Google them to find out what they suggest.