Annoy-A-Tron Beeper

Annoying sound maker!

The Annoy-a-tron - An Annoying Beep Prank from Gadget Shack on Tindie

Annoyatron

Building Your Own Annoy-a-tron With An ATtiny85 Pedro Liska, 55% OFF

Cat led blinking badge / ornament from Suicidebattery on Tindie

Lenin Electronic Badge v2.0 from GizmoLab on Tindie

Newbie here: how can I make my own annoy-a-tron with custom sounds

New Arrive Funny Hidden Annoying Beeper Office Prank Devices

Twinkie's 2019 Holiday Ornament from TwinkleTwinkie on Tindie

Dr. Who inspired T.A.R.D.I.S. badge with flashing led.

Dr. Who inspired LED badge

How can I make a random chirping device as a prank gift? : r