I think it's pretty decent of them to do that and I think that you know what to do with it + your stuff... however:

Replace the masks with at least N95 masks (or a 3M 1/2 face mask with organic vapor filter cartridges and dust pre-filters)

Upgrade the goggles by covering the vents (suitable caulk/glue open cell foam or snippets of the supplied dust masks) or replace with a better design similar to US issued "desert goggles"

Keep the aluminized mylar - it's pretty stout stuff for its bulk and weight and if you ever need it, uses will suggest themselves.

If you've got room, add a pair of light-to-medium weight wool socks to the bag. (I'm assuming you normally wear synthetic or cotton socks to work - disregard if you already wear wool socks) - you should aim at being able to loosen some laces and fit into your work shoes with these on or these over your synthetic socks.

A few paychecks down the road... upgrade to "stealth" walking shoes - dress shoes that you can REALLY walk miles in. I found a style I like and promptly bought 3 pairs... I hike the woods in moderate weather in the most worn pair and they are VERY comfy, despite being low quarters. Depending on how I lace them, they fit well with every weight sock I own, but best with medium weight wool socks - I sized 'em that way on purpose.

Heck, you know what to do, Willie - why ask us <grin>?

Regards,

Tom