In Toy Story 2 they were gonna get sent to a toy museum meaning there are toys already in a building with security cameras
Which means those toys either never get to move again, make a deal to reveal their sentience to security like Night at the Museum, or have an elaborate Oceans 11 security hack job every 10 hours
For the reveal angle, I doubt it. They did traumatize that innocent kid once but they knew no one would ever believe him so it was safe. Letting a rotating cast of minimum wage workers know an existentially world altering secret seems like a stretch.
For the heist angle, these toys have a hard time escaping a preschool guarded by other toys. They barely took down that camera monkey and that took days of prep.
Which leaves the living corpse angle which seems like a worse nightmare than anything a child could ever do to a toy. Woody would've wished Sid strapped him to that rocket.
