We have a ton of pics from various sports our two DDs have been in over the years. My wife recently dedicated a wall in our family room to them and has gotten most of them hung. She added in various action photos we've purchased at tournaments along the way. It's pretty cool to see them all together and the progression as they've grown. Simple (cheap) frames keep the costs down. Thier friends get a kick out of seeing them as little kids. I do too.
I bought a Fujitsu scanner and scanned 60 years of photos, last year. You put in a pile and it goes very quickly. They are now in albums on a large hard drive. You can watch them on your computer, electronic frame, ipad, etc. You could also send them to Walgreens, etc. and have them made into a collage.
I just put all of my DDs together on a DVD for her wedding shower.