Nothing seems more spring and summer-like than canvas totes. These days its what I mostly carry around town and it's usually one of my many Lotta Jansdotter totes. Lotta's got her new spring collection up and I'm very much into her Klara Big Tote ($76). It's the perfect size to fit all your needs on the go!
More tote bag looks:
Kantra Shoulder Tote ($48 at Lotta Jansdotter)
Linen Pocket Tote ($55 at Sew Darn Cute)
Amagansett Printed Tote ($49.50 at JCrew)
Classic L.L. Bean Canvas Tote ($26-$39 at L.L. Bean)