I was rushed for time, and decided to use something I was very familiar with, PowerPoint. I did a simple math assessment with my preschoolers where I had the numbers 1-5 that the students had to count the pictures on the screen and identify the correct number.
The only drawback was if the students didn't click directly on the link that took them to the correct/incorrect screen, the students got thrown off. They did enjoy the pictures and noise that it made when they were correct. It was a fun alternative to number cards etc.