Related to car seatbelt alarms, newer cars are becoming the worst. New Subaru's never stop dinging.
Many new vehicles interpret items sitting on seats (e.g. groceries) as an occupant and will give you the dings. If it's in the backseat, they may give you a warning to check your back seat when you shut the vehicle off.
They sell seatbelt extenders that just clip into the existing belts which then turns off the alarm. These are also handy for belt clasps that are too far recessed and some people have a hard time buckling in.
Here's a 2-pack for under $10.
https://www.amazon.com/dp/B0C1TB5CG8
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