Paint and a stencil!
You can get ceramic tile very very cheep at Habitat.
Peel and stick tile or laminate floor planks.
You can also use something like beadboard. A sheet of beadboard is about $15 where I live. Get it cut to size in the store and install with nails.
Paint, contact paper, bead board, peel & stick tile, self spacing ceramic tile, roof flashing (my sister did this and I love it, look of stainless for a cheap price).
Hello. Here are some links that might be helpful.
This How to Use Old Blinds as a Back-splash! DIY | Hometalk links might be helpful