These are a good option:
http://www.mcmaster.com/#9378k25/=5udjha
Keep in mind, however, that they are designed fairly stiffly - it's actually the mass of the object mounted to them that helps them do their job. Using one to support only a Jaguar, for example, would not help very much. But if everything was mounted on a single board weighing 20 lbs, they could certainly help.