Simple floral craft for Brownies

Is there a simple, inexpensive floral craft that our 7 year old Brownies can do? This would be something that would have to be able to be completed in about an hour or less. There might be some grandparents on hand to help (as sort of a younger generation/older generation activity). The results may be donated to a local nursing home to put on patients' meal trays. I was thinking something along the lines of tissue paper flowers put in a clay pot (somehow) but I am open to other suggestions. Thanks!