be+useful+to
121as useful as mudflaps on a speedboat — Australian Slang not useful at all …
122as useful as tits on a bull — Australian Slang useless; unhelpful or incompetent person or thing: He, she or it is about as useful as tits on a bull etc …
123come in useful — be helpful, be useful, come in handy …
124make oneself useful — do something that is of some value or benefit. → useful …
125come in useful — British to be helpful in a particular situation Your medical training might come in very useful indeed …
126make yourself useful — spoken to do something to help Could you make yourself useful and get Jenny some coffee? …
127bar useful — /ba ˈjusfəl/ (say bah yoohsfuhl) noun an unskilled assistant who works in a hotel, especially behind the bar. Also, useful …
128make oneself useful — do something that is of some value or benefit to someone make yourself useful get Jenny a drink …