Here's one suggestion from Bit Eimer, who contributed this design several years ago. It's located on the BARCLONE website in the "Accessories" section:

Portable Rocket Rack

You might be able to modify the dimensions for your smaller room. It was designed to fit in a compact wagon, though...

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635