Pursonic Portable UV Toothbrush Sanitizer Case - Travel Toothbrush Sanitizer and Holder - For Electric and Manual Brush Heads with UV Light & Auto Shut Off Timer

I store my toothbrush in a UV sanitizer case. Keeps it clean and also protects it from gross bathroom/toilet air.

It’s a fair question for a hygiene sub and I don’t know why you’re getting downvoted just for asking. I store mine in a UV sanitizer toothbrush case. I can toss it in a drawer or on the counter and it stays clean.