I recently wrote an article for Pubwages on how I upcycled vintage tiles with decoupage. I did a set of three to hang in my office to add a little spring cheer. I used tiles I found at a reuse center but you can buy new ones too. Here is an example of one.
They all have a butterfly theme and have a soft look. I used scrapbook findings but you can use any papers you have and even create a mini collage. For the technique I used, you can read the instructions at Pubwages.