If you visit a new place, you can try to visualize your way back home in your mind without looking at a map. You can do this by trying to recall the milestones or landmarks that come in your path home. 

This will help you in sharpening your memory a great deal.  

Whenever you are meeting a person, try recalling your previous interactions with them. 

Try to remember when you met them for the first time, try to associate their hobbies with them, or you could even try to remember tiny details about their background.

It will make your brain sharper and will allow you to boost your memory as well.

For example, if you are at a store purchasing something, try to calculate the bill by adding up the prices of individual items in your head.

Whenever you discover a new word, try to play around with it. Recall the synonyms associated with it, recall any possible verbs or adverbs, or maybe even try to recall similar sounding words.

It can go a long way in boosting your memory.

Whenever you get the opportunity, try to eat something new and then try to identify the key ingredients of that particular dish. 

Your sense will be rejuvenated, and you will be able to boost your memory as well.

Chess helps you in sharpening your brain. This is because chess has a combination of so many possible moves at a given time.

It can help you build your ability to think logically. Thinking about your next move in advance will be based on your past experience of playing the game and h...