I am looking for a mod that will make more monsters and raider spawn or that makes random encounters happen just to make traveling more interesting. Does anyone know a mod like this?

http://newvegas.nexusmods.com/downloads/file.php?id=42793 - For random encounters. You can adjust the frequency of encounters and the maximum number of enemies as well as have encounters with DLC baddies in the Mojave.
http://newvegas.nexusmods.com/downloads/file.php?id=38623 - For general multiplication of spawns, people and patrols.

Thank you, gonna try these out for sure.