I had thought about making my own logoed bag because ordering one was $40+. Then I looked on Amazon to see what they have. Yicks! That is still above my $1 budget...
-select the size of bag you want. I wanted an extra big bag so I could carry my art prints.
-2 20x16" panels
2-16" x 4in panels
1-20x 4" panel
2 4" panels for the straps.
I took grey canvas fabric and folded both ends over about a quarter of an inch and pressed them with the iron. After pressing, I folded it over in half.