intents and purposes, not intensive purposes.
specific, not pacific. Pacific is an ocean.
taken for granted, not for granite, or grant it.
kit and caboodle, not kitten caboodle.
just deserts, not just desserts.
et cetera, not ex cetera (as many of us have already agreed upon earlier in this community)
Rouge makes your cheeks red. A rogue will make your cheeks red without makeup.
Flammable and Inflammable mean the same thing!
(and then there's the ones that slip my mind until I see them)
Does anybody have more to add?