I fit all this stuff in my A45. How, you ask?
By putting the stuff into these cubes, sacks, and pouches.
And then putting the cubes, sacks, and pouches into the A45 (I didn't take the little pink steamed bun mascot; I just thought you might like to see him).
Here's what I took, in the intensely anal-retentive detail you expect from me:
Clothes [Large A45 Packing Cube]: a wool cardigan; a dress shirt and tie; four t-shirts; a hoody; a pair of pants
Clothes [A45 Travel Stuff Sack]: three pairs of Icebreaker chonies; five pairs of socks (three to wear, and two to recycle at the Patagonia store)
Toiletries [3D Clear Organizer Cube]: three little bottles of contact solution (I'm using up a few half-used bottles); toothpaste; hair wax; shower gel; moisturizer
Toiletries [Small Double Organizer Pouch]: floss; tweezers; nail clipper; spare contacts; contact case; eye drops (two kinds)
Pharmaceuticals [Mini Solar OP]: lots of drugs.
Office [Cache, Mesh 3D OC]: 11" MBA; Hobonichi Techo; Field Notes; Sharbo X LT3 (multipen); Pilot RExgrip
Cables [Travel Tray]: MBA charger; iPhone charger; retractable USB/Lightning cable; USB/micro cable; Jackery Bar; car phone charger; Guardian Light
On the plane stuff [Side Effect]: Kindle; earbuds; XS Moleskine Volant; Fisher Space Pen; hand sanitizer; lip balm; mints; Advil; half a pack of Morinaga Hi-Chew; two hard candies (suspiciously named "Flowers' Kiss")
Other random loose things: SoftStar shoes; Camper shoes; a belt; a blue pillbox with lots of drugs; bottles of painkillers; three travel packs of Kleenex; sunglasses; regular glasses; full-size deodorant (it's almost empty so I was like why the hell not); water bottle; box of stationery and a bookmark for my mom; Burnt Orange Daylight Backpack.
To be continued...