Know a good song to put to a slideshow?

I’m in the process of making a video for a friend who is moving across the country. I’m wanting to add some pictures at teh end of the video but need a song or songs. for some odd reason, my mind is blank and I can’t think of any songs that would go with pictures. would like for it to be a song thats not too sad but would reflect the point of the pictures serving as memories.