All very good. Looks like you took it right from my iPod.
2am by Slightly Stoopid is the definition of a chill song. It's a must for a summer day with a couple brews.
Here's my suggestions:
Rusted Root- Send Me On My Way
O.A.R.- Black Rock
Led Zeppelin- D'yer Mak'er
Jack Johnson, Taylor, Flake, Rodeo Clowns (w/ G. Love), Sleep Through the Static
Hepcat- No Worries
G. Love- anything from Superhero Brother
Donavon Frankenreiter- Free
Dispatch- Passerby
Dave Matthews Band- Two Step, Bartender, Grey Street
Big D and the Kids Table- Shining On, Chicago, How It Goes
Bedouin Soundclash- Walls Fall Down
The Slackers- Every Day is Sunday
State Radio- Right Me Up
Sublime- Carress Me Down, Waiting For My Ruca
Ziggy Marley- Dragonfly, Looking
311- Love Song (cover)
Man, I love these type of subjects. Good topic!