You can create them as you need them. Here's how to use Genmoji on iPhone to create your own custom emoji. Note that before you use Apple Intelligence, you have to request it for your iPhone.
Jeff Carlson writes about photography and technology and is the author of dozens of how-to books covering a wide spectrum ranging from Apple devices ... "Where's the emoji for this?" ...
It also introduces more Apple Intelligence features to people with the iPhone 15 Pro and Pro Max or a device from the iPhone 16 lineup, including the custom emoji creator Genmoji. Read more ...
As Apple releases its iPadOS 18.2 and the iOS ... After this you will get a text bar. Now describe the emoji you’d like to create and then click on “Done.” Now you are all set to share ...