>>11400282
>but few of them stop to really consider how tight a space you could squash a girl down into.

Word. Compression/stress positions are an under-rated and under-represented form of abuse in hentai. You also get a choice between a clear container that puts the victim's suffering on full display or an opaque one and all the connotations of "out of sight, out of mind" that go with it, which is lovely.

There's other options, too.. I admit that the "Boo Box" scene from "Hook" did permanent damage to my pyschosexual development as a kid. Doesn't help that I found out later the person playing the pirate stuffed into the chest is actually a woman...