I proudly submit for consideration the 1993 Vintage Plastic "Barney The Dinosaur" Alarm Clock.
It is light weight for easy traveling. Runs on a single AA battery.
Loud, obnoxious alarm sound. Easy to set the time of day and alarm time.
Can quickly turn-off the alarm in the morning by pressing the top button down.
So socially-embarrassing no one would want to steal it from your hotel room.
New ones are still available at a reasonable price:
https://www.etsy.com/listing/829603...MIhMXAtcbm6gIVBobICh1SMg0rEAQYASABEgI81vD_BwE
Here is a picture of the one we have in our house.
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