Bicycling comes to mind.
Somebody posted a picture of the 200 Everyday Dyneema Shoulder Bag as bike kit, Dorayme mentioned using a Shop Bag as a front pannier liner and the Packing Cube Backpacks would make great side wire panniers liners.
The Dyneema Small Cafe Bag looks like the ideal biking purse, I used a Cordura Small Cafe Bag before and it is great and very stable with the waist strap.
Nothing can beat 200 Everyday Dyneema Packing Cube Backpacks and Shoulder Bag for dual purpose, packing organizers and lightweight souvenirs and edible goodies gathering.
So of course I want the items mentioned above in the two Dyneema weights!