Kubxlab's mŌna ($30) is one of the more unique iPad stands we've seen. Designed to work with the second-, third-, and fourth-generation full-sized tablets, it's a portable unit that folds down for travel. From end to end the stand is just over seven inches long, with a egg-shaped base at one end and rubber-lined holders at the other. Spread the arms apart and slide the iPad in for landscape or portrait viewing, depending on how you position it. You…