Nice improv on the funnel chisel, but I'd splurge for a real signal mirror. A CD CAN work if you have nothing else, or serve as additional improvised mirrors for others in a group, but I would not rely on a CD as your only signal mirror.

Funnel - This unit is in some ways better than the purpose built ones.

Cut the middle out of a plain gallon bleach bottle and slit the cylinder to make a rectangular sheet you have a very adaptive funnel. You wrap it loose for large openings and tighter for smaller openings. Being a curled rectangular sheet it is very easy to keep clean, and packs away very compactly.

Very innovative Art! I use a similar piece of repurposed plastic for a cutting board. Never thought of using it as a funnel. Duh! Thanks for the tip!

Chisel, I've heard of using CDs as signal mirrors before. The built-in sighting hole is an added benefit. Have you tried them out? How do they work?

In fairly well controlled tests, CDs make poor signal mirrors. It is much better to get the real thing, or use just any old mirror rather than a CD.

In my case, a CD is added to the kits on a (just in case) basis.

I am a city boy ( a 55+ y/o boy for that matter ) and not close to any kind of danger in which I may need a signalling mirror. So , no , I haven't used or bought a real signalling mirror, nor do I know where it can be sold in my part of the world.

In the old days, I used to go in a ship for 10 days as part of my work, or 1-2 days in nearby deserts , but nothing more serious. Now with age and added family responsibilities, I am limited to work in a six-floor corporate building, where i don't see much use for a signalling mirror. A whistle, however, is a part of every kit I have.

Also, my travels are limited to well-travelled highways either by car or as a passenger in a bus ..etc.

My latest project

There are two types of containers that we use and RELUCTANTLY throw away ... One is wet wipes and the other is coffee creamer. The opening in both is very nice and we use them for powder detergent for camping trips ..etc. In the wipes containers you have to cut the lips in the openings to make sure the powder (and small lumps of detergent ) flows smoothly.

WARNING:
Make sure to remove the creamer wrapping from the container so that there is no mistake . You do not want to put detergent in your coffee !!!

Next time when you consume one of those 5 kilograms ( or 10 lb ) of detergent .... and before you throw the empty plastic bag with all those detergent logos , cut one of the logos and glue it onto the re-purposed creamer container , so there is absolutely no mistake about the contents.

Napkins, little packages of condiments and individually wrapped drinking straws from fast food places.

Actually I often just put those extra packets into a ziploc bag and toss them in my backpack. Same with napkins because they can come in very handy for example blowing your nose when you've run out of tissues or in a pinch used as toilet paper if you are in a public restroom that is out.
kat

Great idea Kat! Asking for some extra cream and sugar in a bag when get TO coffee or tea will help increase that stash!

Not sure where you or your SO works, however at my work there is an endless incoming supply of TO coffee, tea and food condiments that continuously accumulate and and are free for the taking.

The same goes for Powerade/Gatorade bottles. I snag these when I can as they make great (strong/tough) storage for food when multi-day hiking and camping. I find that although the bottles are bulkier, the extra weight of the bottle is negligible and these qualities make for much better and more reliable storage then ziploc bags.

Examples, left to right:
Milk powder, pasta, oatmeal, basmati rice

The small plastic jar on the right once had PB in it and after a couple of good washes and rinses, there is no residue smell at all.

In the PB jar:
Individual packets of coffee, coffee whitener,tea, hot chocolate, sugar packets, multi-grain bars.