Unblock the sink with baking soda and vinegar
Do you recall those school projects where you had to build a functioning volcano? Hopefully, you remember all of the advice since it might come in useful when attempting to unclog a sink without a plunger.
However, this time, you won’t need a paper volcano to complete the effect. Fill your sink halfway with vinegar, and then add one or two teaspoons of baking soda. It should begin to bubble and clear out any blockages in minutes.