My father turns 50 in not too soon. He's an old hacker who learned C in the 80's to be able to do Linux. He was a computer pioneer in our country.<p>Now he works with security at a big company, and is very interested in cracks.<p>One idea is to get him a RFID scanner and a lot of tags. Or a complete Arduino set, with everything. Have you given something to a hacker?
You can get a raspberry pi. It's a credit card sized arm linux computer. <a href="http://www.raspberrypi.org/" rel="nofollow">http://www.raspberrypi.org/</a>
Something like this? Credit card sized computer like a raspbery pi but with the later Samsung handset processors, quad core ARMs.<p><a href="http://www.hardkernel.com/renewal_2011/products/prdt_info.php?g_code=G135341370451" rel="nofollow">http://www.hardkernel.com/renewal_2011/products/prdt_info.ph...</a>
How about the Gumstix. It is tiny linux computer which has been used for robotics. You could maybe think of working with him to build drivers in order to install doom on it. :-)<p><a href="https://www.gumstix.com/store/packs.php" rel="nofollow">https://www.gumstix.com/store/packs.php</a>