Bigger on the inside, a visual history:

Newt Scamander's Briefcase (technically December 1926 but also 2016)

Milo Murphy's backpack. He can keep an anchor in there.

What about Dora's back pack? That thing can fit a hang glider.

Doraemon's pouch!
Yeah, I'm asian.. Doraemon was a big part of my childhood..

What bout my magic satchel

Patrick's rock

Snoopy's dog house

Genie lamp?

Will nobody mention Sport Billy's bag? Or that Globetrotter's afro?

Was expecting "your mom" joke. Disappointed.