a number of (something)
Several (people or things). Don't worry, there are a number of options to choose from if this one doesn't appeal to you.
a number of
A collection of persons or things; several. For example, A number of tours are available, or We've visited a number of times. This idiom often is modified by an adjective giving some idea of quantity, as in Only a small number are going. [1300s] Also see any number of.