Sonic Bomb Dual Alarm Clock with Bed Shaker, Camouflage | Sonic Alert Vibrating Alarm Clock Heavy Sleepers, Battery Backup | Wake with a Shake

A good old alarm clock. Make sure to buy a really loud one and place it far away in the room. I bought the one below a few years ago before COVID and it still serves me well. Not to mention it looks badass https://www.amazon.com/Sonic-Alert-SBB500SS-Extra-Loud-Flashing/dp/B01CUNCTDA?ref_=ast_sto_dp&th=1&psc=1