Try reading books that will teach you something new, such as books about history or another subject that interests you.
Try writing a new word someplace where you will see it often, such as on a whiteboard in your kitchen or on a sticky note on your desk. Choose a word that is challenging to spell and use to get the most out of this daily exercise.
Languages are a great way to keep learning new things and challenging your brain. [1] X Research source Even if you only learn a few new words or phrases in a language, this will exercise your brain.
You may even consider cancelling your cable or satellite service and only watching things online that are educational. You can find many educational videos online and through subscription services.
Try learning to play the ukulele. This is an easy instrument to learn and there are even clubs for people who play.
Look into joining a chess club in your area to get more opportunities to play and learn from more experienced players.
You might even consider joining a group like Toastmasters since they cover a wide range of interests.
You may even be eligible to take a free course at a local college or university. Some colleges and universities offer free courses for mature learners.
Try using skills that you have not used in a while, such as woodworking, knitting, sewing, or doing home repairs.
Try doing a do-it-yourself project to learn new skills and make something in the process.