Help needed: How do you keep your Indian Parents engaged post their retirement?

Hello everyone, So my mother has been an english teacher for more than 30 years in a good private school. Now that she is about to retire, we all are very worried what she will be doing with so much of time! We don’t have any financial problems as such and I earn enough to support her but we all can agree on how important it is to keep oneself engaged. She especially has had a very busy life considering she managed her school and us, her children, single handedly. Since childhood I have seen her taking care of all the household chores, food, etc and school all by herself. Compared to her colleagues, she is way more energetic. She is physically fit but obviously feels little tired after hours of age owing to her age(60 yo). I was wondering what are the possible options we have for her post her retirement. She has 2 more working months left and then her job will be over. We are wondering may be book writing or some tuition can help, but what all you guys did in your similar situation?! We will definitely include some physical exercise component in her schedule, but what else? Looking forward to your replies, Would really appreciate any suggestions! Thanks in advance! Edit: I just wanted to add on that though making money is not much priority, but still she would prefer paying options more because of some personal reasons. Thanks