The two sites I checked out were BigHugeLabs & Photovisi. I found them easy to use and created some cool pictures! I created a magazine cover, and two collages shared below.
In thinking how I might use these with my students. . .
1) Create a booktalk poster2) Take pictures of their research/writing process and discuss the steps along the way
3) Spine labels collage of their favorite books
4) Genre poster using spine labels of titles they read in that genre
5) Author highlight