There are a load of layered house plant cut files that I really love. They would look wonderful in their own right as wall art, but would also make great toppers for cards, scrapbook embellishments, fridge magnets and so on.
Head over to Design Bundles to take a look. The files are part of the Design Bundles Plus membership, so you would have to become a member to download them. However the first month is just $1 and you get 10 free Plus credits as soon as you sign up. And you get to keep any Plus purchases even if you cancel the membership. Each of the files above are just one plus credit each, so you could buy them all and have credits to spare!