Have in it.
Besides having all the shelving I need to organize my fabric.
The most important item would be a cutting/ironing table at the perfect height - allowing me to not only cut out my blocks but to start sewing them on the same day - and of course have plenty of storage underneath it.
Bad backs are a bear when trying to sew quilts - I have to explain to mine all the time that it is hurting for a good cause.