I use a backpack to keep my extra supplies in.

I do not carry anything other than an extra in car trunk maybe 2....in bag from grocery store....

When Diana and I go out I have a spare diaper (disposable) for her and spare booster pad. Diana carries this in her bag.
She also has diaper skin protection and sun screen.

It depends upon the time.
On an ordinary day : I wear pants during the day. I have a spare diaper (tab style, easier to change) and wipes in my bag (with my laptop).
When I take a trip, I wear thicker tab-style diapers and I carry my diapers in my suitcase.

I'm in a wheelchair. I don'tvoften get out. My caregiver. Has to pack 2 large backpacks full of stuff fpr My ventilator. And Gtube. As well as incontinence briefs. Boosters. Extra seat pads and bed pads for changing. As well as all the wipes, creams . water , medications. Gloves. A extra pair of sweat pants. I usually can stay out for 4-5 even 6 hrs. Without needing to be changed. Unless I have a bowel accident. I wear overnight premium briefs and boosters.. Its easier that way. Finding a bathroom where I can be discreatly changed in My wheelchair can be difficult. So most of the time. All those supplies are not even needed. But if We dont carry them. Then they will be needed.

Thank you every one who replied thus far,I use a messenger bag to carry 2 Diapers, wipes, 2 pairs of gloves. and disposal bags.

Depends on where I am, and what I am doing. For work: 2 extra pull-ups, wipes, powder,hand sanitizers and disposal bags. For short trips out of the house, 1 pull-up. A little baggy of wipes and disposal bag

carry 2 spare adult briefs, gloves, underpad, black plastic bags, wipes, paper towels (for soil), deoderant spray, Dispose of used briefs in public but wrap properly. wear gary briefs over adult brief. Wear cotton shorts under to absorb leaks and to diffuse heat.