Page Drop Down List

What plug in or widget can I install to setup a drop down list on my main page. I am not talking about drop down menus i am talking about drop down category list that will go on the page itself. For example if i want users to select from a list of different selections of phones. I am selling cell phone unlocking services and want to put a drop down that clients can pick from a select group of cell phone providers. For example if you look at the middle of the page at this site: https://www.unlock-code-warehouse.com/