Pineapple is an innocuous looking device that contains extra circuitry/capability to attack or test security at an installation. A common form factor is a something like a powerstrip that is mailed out to an office. once its plugged in it powers up and starts scanning whatever it can and sending data out over its own SSID/wifi or even a cellular modem.

NSA even has their own brand: https://www.zdnet.com/article/power-pwn-this-darpa-funded-po.../