A must item

[BikeFreak]

A folding cup for my oat meal in the morning.

[hikerjer]

Actually, I don't know it's that important until I discover I don't have it.

[rmball28]

Baby wipes

[wildtoad]

If I'm touring in a dry season area, my plastic mallet for tent stakes. Maybe not truly essential but saves lots of unnecessary drama!

Cheap mesh bag to hold eating utensils/cup/plate...keeps everything together and stuff will dry in the bag after washing.

Wipes/hand sanitizer

[Nyimbo]

Corkscrew.

Blood thinners.

Lol

[John Nettles]

Bandanna. A must for any/all outdoor activities.

I have carried a bandana for 5+ years and think I have only used it a handful of times.  However, it is potentially so useful, I keep bringing it.  What do you actually use it for?  I think some of the uses are a "sweat rag", a sling in case you injure your arm, a place mat, a cover for a wound, a water filtration pre-filter for silty water (that is what I use it for), and a place to put small parts when working on the bike.

Tailwinds, John

[BikePacker]

Bandanna. A must for any/all outdoor activities.

I have carried a bandana for 5+ years and think I have only used it a handful of times.  However, it is potentially so useful, I keep bringing it.  What do you actually use it for? *  I think some of the uses are a "sweat rag", a sling in case you injure your arm, a place mat, a cover for a wound, a water filtration pre-filter for silty water (that is what I use it for), and a place to put small parts when working on the bike.
Tailwinds, John

*Now a-days : (,
to get into retail locations along 'the way' that require a Mask?

[Pat Lamb]

Bandanna. A must for any/all outdoor activities.

I have carried a bandana for 5+ years and think I have only used it a handful of times.  However, it is potentially so useful, I keep bringing it.  What do you actually use it for? 

If I didn't blow my nose on it last night in the tent, I'll use it to clean my glasses when sweat drips down onto them.

Minor rant:  I HATE dripping sweat on my glasses!!

[gottobike]

Bandanna. A must for any/all outdoor activities.

Uses:
Sweat band
Hair band
Head scarf
Wash cloth
Dish towel
Sun shade
Eye shade
Lamp shade
Dust mask
Smoke mask
Sand storm mask
Insect mask
COVID-19 mask (added 2020)
Ascot
Tie down
Prefilter for water filter
Fruit/vegetable bag
Tent shelf

And my number one use for a bandana is to wet with water and wipe smog and road debris from face and forehead before it gets into my eyes.