How about a jeopardy review game? You can make one on flippity.net fairly easily.
I don't know what you teach, but how about some coding activities? Critical thinking, problem-solving, reading, and some logic. Hour of code has some good activities- but there are many different websites with Hour of code activities.
code.org
https://www.tynker.com/hour-of-code/
kodeable.com
Kahn academy has one, too.
Interesting video on the number of men to women working in tech is 7:30 even though women make up 57% of the work force. Could be fun to do something with it.