I really like dry erase pockets. Also, don't reinvent the wheel - it is perfectly acceptable to find pre-made cards online for free to print.

https://www.amazon.com/AmazonBasics-Heavy-Duty-Ticket-Holder/dp/B07K928BX5/ref=mp_s_a_1_4?crid=RCPFE31QTTI&keywords=reusable+dry+erase+pockets&qid=1675435696&sprefix=reusable+dry+era%2Caps%2C93&sr=8-4

Target sells them too