As we train in a fitness center and have to set-up and tear-down each class, we have a "shomen-in-a-box". The blue cloth covers a RubberMaid storage box and O Sensei, the flower arrangement and necessary dojo log books etc, live inside when not in use.
The flower is fake and from Target, but I get a lot of complements on it when we have it set up at demos. Guess I got lucky. The photo of O Sensei was a gift from a friend long ago. The stone is my favorite concept in Aikido, takemusu aiki.