Father-in-law is like your own father. You must send him a blessing on his birthday. Here are some suggestions for you, hoping to inspire you: 1. First of all, I recommend you to give him a massage gift. The elderly are old and like these things, and they are also practical, such as massage pads, massagers, and foot baths. If the elderly are not in good health, you can buy some health products and supplements in a targeted manner. For example, if they have high blood pressure, buy some blood pressure-lowering supplements. It is most appropriate to give such a gift to your father-in-law according to his physical age. 2. You can give your father-in-law a practical gift, such as a watch, belt, wallet, etc. 3. If you know your father-in-law's preferences and size, you can buy some clothes, shoes and other gifts. I suggest you buy clothes, but buy better ones! They are both practical and warm to wear, and the elderly like them very much.