You conjure forth a single-story workshop, the workshop is 20 feet on each dimension made from stone, wood, or another suitable material. Upon casting, you can choose an artisan's tool that you are proficient with to be available within the workshop, anyone may use chosen tool for during the duration of the spell. The workshop changes its appearance and the materials within the workshop to suit the needs of the chosen tool. (Ex. if the chosen tool is Smith's Tools, then the workshop may contain a forge, anvil and various metals.) The workshop has enough materials to maintain gear, and to make simple creations or non-magical items. If someone wished to use the work area for something other than simple creations or gear maintenance, then they must provide the required materials. 

At the end of the spell's duration, all creatures and objects within the workshop that were not created by the casting of the spell will appear safely on the ground where the spell was cast.

You know, I find it very irritable that most people don't find enjoyment in creating things. At least now those that do can do so while they travel. 

– Gilman Fizzlewix