I never hit my usage caps, what heavy tasks are actually worth running?

A user on reddit.com is seeking advice on how to maximize their subscription value, as they consistently fail to reach their 5-hour limit or weekly usage caps. They feel like they are not getting their money's worth and are looking for suggestions on token-heavy, worthwhile tasks to utilize their subscription more effectively. The user is actively soliciting ideas from the community to make better use of their paid service.