Best Photo collage makers?

My mom's birthday is tomorrow and her favorite person/pet/friend/companion in the entire world was our boxer, Cassius. Well he died just last week and she misses him terribly. I recently started getting a little bit involved in photography and I have a TON of the dog doing the things he/they loved to do. So for her birthday I was hoping I could take all of those pictures and put them into some sort of collage so that she would always have him close by. Problem is, I'm not very artistic and I have no clue how to even begin to make a collage. Is there any website or anything online that I could simply upload the photos I want to use and then it would kind of do the collage part for me?? I need something extremely quick and easy.

 

Hello there!

I like really much your idea for your mother's birthday, sounds sweet!
I have a program on my phone called Pic Stich which I usually use when I am lazy to edit one myself although I do not think you can collage so many pictures with it.. but sometimes it's useful too.
There are probably several more collage makers on the web, here's one of them: http://www.befunky.com/features/collage-maker/
You could probably find other nice sites as well if you kept looking. ♥

Happy birthday to your mommy!! c:

 

thank you！

 

thank you!photo collage maker software?