"Brand spanking new" is a popular phrase used to describe something that is completely new and unused. However, it can sometimes feel overused or cliche. Luckily, there are plenty of synonyms that can be used in its place. "Fresh off the press", "untouched", and "just out of the box" all convey a sense of novelty and newness. "Mint condition", "immaculate", and "pristine" all indicate that the item is in perfect condition and has not been used or tampered with. "Virginal" can also be used in the context of something being new and untouched. With these alternatives, you can describe something new and exciting without resorting to the same old phrase time and time again.