For me, it depends on which "every day" I'm in... every day during the week unfortunately means I'm in a suit most of the time, and although the jacket might hide even a large fixed blade in a sheath, it's just not going to be acceptable. In that case, I only have "on me" a very small SAK and a Leatherman Squirt on a keychain with a flashlight, whistle, compass, and fero/magnesium combination rod.

Usually nearby, in my desk, and in my car, well, I have an assortment of very capable "tools" at my disposal.

On the weekend, I'll have a decent locking folder in my pocket, and a Leatherman Wave on my belt usually.

On a camping weekend, I'll have that, plus a fixed blade in a sheath on the belt.
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- Ron