Here's a few Hometalker ideas for you Nana!
I might suggest a real tile back splash. You can get large sheets of tile.
Nana: Amazon has quite a peel and stick (contact paper) selection!
you could use reclaimed wood, you could use corragated metal sheets, you could use bead board - here are more ideas
I recently did this. Here's the link:
Wallpaper that looks like backsplash tiles is available for purchase.
Here are some examples: