A popular exhibit at a museum in Berlin lets you sleep among the reindeer there. For a price, you can rent a bed which revolves around the reindeer population there, and watch the reindeer while you try to get some sleep. Although some people have found it too noisy to get any sleep.
http://www.usatoday.com/travel/destinat ... ibit_N.htm
Would you try being alone this close to the Reindeer?