To Store Near-Empty Condiments Use An Egg Carton
To get those last few tablespoons of mustard or ketchup at the bottom of the bottle is more annoying than anything. You would hate to waste your money by tossing the bottle as you just know there’s a significant amount left.
To get every last drop, you could try storing your condiments lid-side down. To hold the condiments in place without them falling over, use an empty egg carton.