The info on the web, and youtube.....which are American, paint a much brighter picture for these methods of transaction. 

Here's the list: liquid hand soap, paper towels, kleenex, toilet paper, plunger, blue paper shop towels, canister of clorox wipes, first aid kit, large garbage can, large garbage bags, flashlight, step stool, contractor's roll of paper for floor protection, handyman tool kit, bottled water for the crew, N95 respirators, hearing protection ear muffs, cleaning gloves, work gloves, safety glasses, cleaning supplies caddy, repair supplies caddy, inspection tools caddy, shop vac, broom, light bulbs.

It was about 6x8 inches and probably had about 50 to 75 about hornets. i scraped nest off of building with a drywall spatula into plastic bag in darkness with a 3rd body holding a flashlight.

Flashlight and crowbar.Marketing materials - business cards, flyers, doorhangers etc.Bandit signs.

-Flashlight-Contracts, Check for Earnest Money, Cash for option fee -Your business cards & your closing title agents business cards-Clipboard-Offer sheet for them to keep Let me know if I can offer you any more assistance, best of luck Larry :)

Other folks simply change the envelope color to a brighter color or different type of envelope and it helps them stand out but still utilize the yellow lined paper.Recently I have seen a good response from a patriotic themed lined paper in a blue envelope.

Homeless construction painter plumber clothes, like usual.Bring a little flashlight and $4 receptacle tester and be ready to get into attics and crawls. 

Move on to bigger and brighter pastures.

Painting it white made it brighter and feel really open.

I do like a window in a bathroom, it can make a small one seem brighter and nicer.