Aside from my old standbys -- loops of surgical tubing and a cable ties -- I have always liked the two-piece velcro-lined keepers, which securely hold an octopus, and only require a minor tug to separate.
Couldn't find the current version of it; but here are some similar ones, listed on LexCorp.
Cheap, quick and dirty . . .
Couldn't find the current version of it; but here are some similar ones, listed on LexCorp.
Cheap, quick and dirty . . .