So it’s not a small pencil case but here is what I carry when I travel as well as working in the home studio. My “get out and create kit”.

From top left to bottom right.

Pencil case: LIHIT LAB. Double Zipper Pen Case, 7.9 x 2.8 x 4.7 inches, Black (A7555-24) on Amazon

Pentel water brushes (3 sizes) Sailor fountain pen (45 and 50 degree fude pens loaded with Platinum Carbon Ink) Gelly roll (08 size) Kuretake brush pen Tombow Mono Eraser Nobel 2 mm clutch pencil (2H lead) Nobel 2 mm clutch pencil (2B lead) Pentel Nero Orenz .5 mm (2B lead) Pentel Nero Orenz .3 mm (2B lead) Pentel Graphgear 1000 .3 mm (2B) Pentel Graphgear 1000 .5 mm (4B) Pentel Graphgear 1000 .3 mm (2B) Pentel Graphgear 1000 .3 mm (2H) Pentel Graph-gear 1000 .3 mm (2B) Rosemary & Co travel brush (R1, R0, R10, R5)

Micron pen (01, 005, 03, 05) Faber Castell Art Grip Aquarelle (mix of colors) Faber Castell Perfection Eraser Tortillon/blender (two sizes) Winsor & Newton Gouache (Zinc white, Neutral Gray) Blu-tack (for removing graphite) Staedtler 3 mm pencil Kum Sharpener Watercolors (20 half pans - Daniel Smith) Oil reservoir repurposed for water (bent the tab and added magnets)