I've looked into Kodak's box cameras due to idle curiousity and my increasing obsession with old cameras - the frustrating thing with them is the film sizes they take - some of them do take 120 natively, others were designed for 620 (120 with a modified, incompatible spool, so you were forced to buy film from Kodak, or respool 120 onto 620 spools yourself), but some of the 620 ones will take a 120 spool without modification, whereas some of them will only fit 120 on the feeding end, and you need a 620 take-up spool.
And some, like the Brownie Hawkeye Flash, were designed to take 620, but Kodak discovered a design "flaw" after the first run that allowed unmodified use of plain 120 film, so the camera was further modified to limit film use to only 620 (or at least make it more difficult) - but otherwise the cameras look the same and there's no indication of what they'll take until you actually try it.
So, I'm still interested in trying a box camera, but not if it means pulling teeth to get the film to load. After some more reading, I'm tempted to get a Zeiss "Box Tengor", but we'll see...