When it comes to describing someone who is wasting time or being aimless, "fiddles about" is just one phrase that can be used. There are countless synonyms that can be used to express this concept. Variations might include "mucking about," "dilly-dallying," "piddling around," "wasting time," or simply "lazing." Each of these phrases captures a slightly different nuance, but all convey the general idea of someone who is not focused or productive. Ultimately, the choice of words often comes down to the tone and context of the situation. Whether someone is fiddling about with a toy or procrastinating on an important project, there are plenty of synonyms to describe their behavior.