Vintage botanical prints are still hot. They are great to bring a bit of nature inside. Etsy is a good source to find similar prints. Hang a large print on your wall or you can also try to find a vintage botanical book and use the pages with drawings to create a group of smaller prints. Small prints can best be framed but for a large print I would use a wooden poster hanger. You can make these yourself (you can find a tutorial on Yvestown for exmaple) or you can buy one. This Etsy shop has some beautiful wooden hangers.