Do you have something specific in mind for a card, or you're just not seeing what you need in my other cards? You can purchase a custom card here! You can get a standard rectangle card, or make it more exciting and get a round fidget card which spins with a gentle tap on the corner.
 
There are no limits (within reason) but to make it easier, here are some suggestions:
A suble pride themed card, such as the pan beach or nonbinary mountains featured
An oversized occassion card
A card with a trans person's new name on the front