The accordion can work via keyboard with some styling changes, e.g. position or clip checkbox instead of display:none, add visual indication on :focus. I didn't check the others but their accessibility may be similarly correctible.

Of course for accordion in particular it would be better if the pure HTML solution of using <details> and <summary> elements was supported in all browsers. They're already in Chrome and Safari and will come out from behind a flag in the next Firefox version. A polyfill for IE etc. can bridge the gap.