Sniffles are the worst. It's not really a cold but you can't get rid of it. We often sniff hot water, or drink hot drinks to alleviate the situation, but how about using an ice cube to do stop it? From Redditor rsharvey:
My solution is to drink very cold drinks while sucking an ice cube against the roof of my mouth. Blocked noses are caused largely by swollen blood vessels in your nasal cavity, so getting some ice near them will cause them to contract a little. Also I avoid hot drinks. They only make it worse. Which is annoying because a blocked nose is usually joined by a sore throat.
Will it really work? We haven't tried it out but it's definitely something to keep in mind.