Another round from my summer camp days in the early 1970s:

Fire's burning, fire's burning;
Draw nearer, draw nearer.
In the gloaming, in the gloaming
Come sing and be merry!

I recall singing & easy strumming with:
King of the Road.
Teach Your Children.
Vive la canadienne.
J'entends le moulin.
Yellow Bird.
Side By Side (we ain't got a barrel of money)
Big Rock Candy Mountain.
Cindy.
Erie Canal.
Grandfather's Clock. (it stopped short...)
Way Down Upon the Swanee River.
Scarborough Fair. (with or without Simon & Garfunkel's canticle)
Blow the Man Down.
Camptown Races.
Who's Gonna Shoe Your Pretty Little Foot?
On Top of Old Smoky. pick a version, any version, or make a new one.
Arkansas Traveller.
Blue-tail Fly.
The Keeper.
Home on the Range.
Waltzing Matilda.
Sit Down, Sister.
A-rock-a My Soul in the Bosom of Abraham.