My new-ish BOB includes work shirts, keycard for the office, & a laptop charger.

These are great ideas. I’m a big fan of keeping an emergency shirt in the car.

I'm curious now. What does the emergency shirt of the Great Chaos look like? A tactical polo? A travel shirt with many pockets? A henley? Or perhap a dress shirt?

Long sleeves, at least two pockets which can be fastened, synthetic fabric, fairly loose fitting (to allow layers underneath), probably light blue in color (not critical)

Never really needed a spare shirt.

Most of onsite work (software developer) was commuting to London, so just bought a new clothing if had to stay longer than expected.

Did like the idea of vacuum packing a set of the essentials (socks, boxers & tshirt) and leaving it in a bag just in case.

Currently it’s a dress shirt purchased from my employer’s corporate logo store. I have three basic work uniforms depending on the occasion (jeans and a collared shirt; slacks and a collared shirt; slacks, sportcoat, and dress shirt being most common). The corporate logo dress shirt will serve for any of these purposes. It wouldn’t look great with a tie, but I think the last time I wore a tie at work was in early noughties.

For the past year my work uniform has been to stash a polo in my home office for any video calls where a t-shirt is inappropriate, but I’ll be heading out to see customers in person again soon enough.

Having a bug out LOCATION is a must, imo!

Whether a person has another piece of property, or a friend’s/relative’s place with a pre-arranged agreement to use it as a BOL, it needs to be organized well in advance of ever needing it!