Compared with other zodiac signs, Cancer people are often easy to satisfy. A small and warm gift can make them satisfied.
Send him a very sincere article, maybe he will be moved. But don't send flowers or something, flowers can only be seen for two or three days. If you want to send plants, send them with vitality, good living, and long-lasting.
You can also give him something you made yourself. Although the gift is small, it is full of your heart.
You can also give him a gift about his zodiac sign, such as the 12 zodiac handmade DIY sun jars and 12 zodiac pillows are good choices.