It's very trendy again to decorate your walls with stickers. Lots of online printing houses are now offering those products. My own printer Spoonflower is also offering that service.
I've tried printing some stickers using my Oz Animals design, minus the background colour.
Oz Animals wall decals
They come in a large sheet with all 6 animals, or separately in single or multiples. They peel easily and you can stick them elsewhere if you want to change the location or redecorate.
Here is a test one stuck on the back of my computer.