Which of us with bad sinuses hasn't tried anything and everything to find relief? Pills, nasal sprays, neti pots. One of the best things I've found is a percussion massager, turned to the highest available setting, applied directly to the face in violation of the owner's manual. I propose a smaller, more practical and purpose built device. Picture an ultrasonic electric toothbrush, but instead of a toothbrush head there is a 2-3" long suppository-shaped end piece. Bacteriostatic lubricant is applied and the device inserted as far as practical into the nose. Intense vibration shakes loose years worth of thickened mucus, blood, and pollen. A convenient timer stops the vibration automatically after a few minutes in case you've lost consciousness. You awake and begin your life anew.-- DIYMatt, Apr 10 2023 I'll take three please-- pocmloc, Apr 10 2023 What [pocmloc] said.-- whatrock, Apr 10 2023 A bidet version might also be effective in retentive situations.-- mylodon, Apr 11 2023 I'll bun the bidet version. The sinus version looks too dangerous. No skull-shattering resonance for me, thanks.-- Voice, Apr 11 2023 random, halfbakery