Hi, maybe this is a stupid question, but still I'll try to ask.

Is there still an Altcoin that can be mined in a portable unit - like for example a laptop or desktop or any smaller unit. The idea is, I'll bring it to work Mondays - let it mine for 5 days- and I'll bring it back home on Fridays - to rest the unit for the weekend. So basically, electricity would be free.. Or maybe that is not possible?

Thank you