US$ 27.27
aoking travel backpack Laptop Waterproof Carry-on with Trolley Color:Team Light Blue / Sugared Almond AAAA-C-005-20000 Loungefly Disney Pixar UP
Loungefly Disney Pixar UP Mini Backpack
£34.99 from Belkin See here more laptop bags here
AAAA-C-005-20000
Color:Team Light Blue / Sugared Almond
I still also bring a shoulder strap with me, and use the side handle at times, but those are secondary options for short-haul situations