I love talking about painting stuff! My easel is home made. It's not ideal but it's light, strong and works just fine. I use it a lot.
For my larger paintings I have a big paintbox, again home made.
Here's what's in it:
1. 11" x 14" canvas panels in swing out panel holder.
2. Wooden palette. Fits in same holder.
3. 150 ml size tubes of oil paint.
4. In this compartment I keep a tube or two of white paint, a small (37 ml) tube of ivory black, vine charcoal which I may someday use, along with an eraser, and whatnot. Whatnot gets into a lot of my stuff.
5. Here I keep a few plastic bags for oily rags, plus a couple bottles of almost-never-used medium; one of linseed oil and one of liquin.
6. Tube wringer. Domestically made - not imported. The imports break as soon as you try to use them.
7. Brush washer filled with odorless mineral spirits. Bigger than the one I use with the pochade boxes, but I wish it was bigger still.
8. This little compartment holds a small container of brush cleaning soap, if ever it's needed, a neglected medium cup, a wire hook for hanging the brush washer from my easel, and a thumbscrew for fastening the support that holds the paintbox lid open.
9. Bamboo brush holder with brushes ranging in size from a little rigger to size 14 or 16 flats.
10. Also in this compartment are paper towels in a plastic bag and a couple palette knives. The hardwood lid support fits into this compartment for transport. There's a collapsible mahl stick in there, too.
I have a few pochade boxes that fit onto camera tripods. Here's one of them:
It fits into this bag for carrying:
Here's a bag I carry other painting supplies in:
1. The bag.
2. Paper towels in a plastic bag.
3. Apron. Keeps paint off of my clothes...usually.
4. Plastic shopping bags to use for trash bags. I keep a few of them on hand.
5. Extra paint solvent. This has saved my painting outings more than once!
6. Walnut oil, if ever I use it.
7. Liquin. I rarely use it.
8. Brush washer with paint solvent. Gets used a lot.
9. Small container of brush cleaning soap.
10. This slides into my homemade 8" x 10" pochade boxes when I want to paint in a vertical format instead of a horizontal one.
11. This screws onto a camera tripod and holds my little Julian thumb box, which doesn't have a tripod attachment.
12. 4" x 6" canvas panel. Fits in my homemade 6" x 8" pochade boxes.
13. 6" x 6" canvas panel. I keep these tiny panels for the rare occasions when I want to paint smaller than 6" x 8".
14. Hook for hanging brush washer from a pochade box or easel, and a spare. These are made from a coat hanger.
15. Collapsible mahl stick made from an antenna from a no-longer functioning boom box.
16. Small plastic bag which holds spare hardware for easel or paintbox, rubber bands, extra business cards and whatnot. Not sure I need the whatnot.
For the bigger painting panels I'll also carry panel holders. With a hat and a day pack with water, some food, rain gear, insect repellent, TP, and other outdoor equipment that pretty much rounds out my gear. Which of these things I take with me on painting trips depends on the size I want to paint and whether I'm driving, walking or biking. There's more info about all this on my blog.