What sort of limitations are you facing? There are a lot of different things you could do outside of work to improve your profile and many could be done remotely so your physical location limitations wouldn't be relevant. Consider the actual activity and how it relates to either your overall story or something you are very passionate about. Too often applicants do things that, while impressive, don't match with their profile. You should also think of quality over quantity for extra-currics.
Activities can come in the form of something as simple as mentoring or providing strategic advice to organizations, to name a couple.
At this point, focus on consistency and leadership in whatever you do. You should be able to find things to do remotely and feel free to contact me for more ideas.
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