Let's see what I have "stolen" from my husband's shop for my sewing room.
A drywall square......it's like a t-square from drafting class. Only it much larger (48" straight edge w/ 12" metal "t")
Speed squares (one large one small) I didn't "lift" those, but a gift from Hubby.
A telescoping magnet wand
An assortment of clamps, although some have ended up back in the shop.
A few pieces of expensive hardwood. In 2" x 4", 4" x 4", 6" x 6" sizes for pounding on in various crafting endeavors. As well as putting in snaps.
A small vise and anvil in the garage, also for above mentioned snaps.