Restate the thesis statement of the essay quickly and concisely. You do not need to summarize the entire essay but reemphasizing the central argument of the essay will wrap up the argument and bring symmetry to the work.
Place the main argument of the paper into a larger context. For example, you may want to quote a secondary or primary source which connects the argument to a larger problem or idea. This approach will help open the discussion up for further inquiry rather than closing off the essay on a dry note.
Redefine a central term or concept used throughout the essay. Redefining a term can also be a good way to connect the paper to a larger context.
Create a new question for further research as a concluding tactic. Asking questions opens up the topic for further discussion and illustrates your interest in the topic.