Ness, I don't know why, but every time you mention Grandma Lizzie, I feel like I know her.
I like many of the songs that were mentioned. The only two I can think to add right now are:
Let's Just Praise the Lord (have no idea who sings it)
I'm Glad to be Alive (Hez Walker & LFCC)
Oh, and if your church is more traditional and prefers congregational songs, you can always do:
I don't know what you come to do (ughhhh!!!)
So Glad I'm Here in Jesus' Name
You Won't Leave Here Like You Came in Jesus' Name (the upbeat version)