Dimensional Workshop

Dimensional Workshop KT: KCG p145 6th-level conjuration Casting Time: 10 minutes Range: 5 feet Components: V, S Duration: 4 hours You conjure an extradimensional dwelling in range that lasts for the duration. You choose where its one entrance is located. The entrance shimmers faintly and is 5 feet wide and 10 feet tall. You and any creature you designate when you cast the spell can enter the extradimensional dwelling as long as the portal remains open. You can open or close the portal if you are within 30 feet of it. While closed, the portal is invisible.
  Beyond the portal is a magnificent foyer with numerous chambers beyond. The atmosphere is clean, fresh, and warm.
  You can create any floor plan you like, but the space can't exceed 20 cubes, each cube being 10 feet on each side. The place is furnished with every artisan tool and typical crafting accessory you could need: anvils, furnaces, looms, etc. Furnishings and other objects created by this spell dissipate into smoke if removed from the workshop. When the spell ends, any creatures inside the extradimensional space are expelled into the open spaces nearest to the entrance.
  At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, the dwelling lasts for 24 hours. Classes: Artificer (Revised), Wizard Note: Both the Fighter (Eldritch Knight) and the Rogue (Arcane Trickster) spell lists include all Wizard spells. Spells of 5th level or higher may be cast with the aid of a spell scroll or similar. Source: KT: KCG, page 145