My fiance and I recently house sat for my cousin while she was on her honeymoon. When she left her apartment, she had all these vases filled with flowers from the wedding. By the time she got back they would have all been really quite dead so we cleaned them. It seemed sad to just have these empty vases welcoming them home, so I filled the largest one with little welcome home messages. I used the left over paper from the banner I made. It wasn't fancy, but it was fun, and most importantly she loved it.
I should try and remember to do things like this more often. Random acts of crafts...or something like that. :)