The best technology I know for this is "D&D dice."
The cube (six-sided) are so common that they don't grab any attention, but toss in a 4-side and a d-20 and then ask them to play with them. Will they learn anything?
Heh. What're the odds?
There's not much out there. I've found three activities. Click on the following link to go to the math section of my web site and click on "Probability".