This app was mentioned in 4 comments, with an average of 1.50 upvotes
There is! :D some cool ent from here made one its call: 420 Wallpaper changer. You can change it to have snoopy dog! I don't know if he updated it, where you can put your own wallpaper.
Link: https://play.google.com/store/apps/details?id=com.proximus.blazeit
Located here for lazy stoners.
Here's an app for android, no root required