i'm also a fan of cheap. to save time, i keep a short (1 foot?) release permanently attached to each lens. i attach a tab of velcro tape to the end of the release, which lets me keep the thing from whipping around and unscrewing itself when i walk with the camera over my shoulder. the velcro sticks to another tab of velcro tape on the lens cap. they never seem to get lost, and i never waste time looking for them or screwing them on.
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