Just LittlePip looped animation :https://derpibooru.org/

LittlePip and Little Macintosh models — https://www.deviantart.com/longsword97/art/LittlePip-SFM-Gmod-543741328
Magic Particle System — https://www.deviantart.com/argodaemon/art/Levitation-Particle-System-v1-0-SFM-Resource-421680197
Fallout 3 and New Vegas Scenebuild Props — https://steamcommunity.com/sharedfiles/filedetails/?id=749074620
BlackJack model on background — https://www.deviantart.com/whiteskypony/art/Fallout-Equestria-Blackjack-New-Mane-DL-498993272
Other scene props from HL2

BlackJack on the background from my previous gif — https://www.deviantart.com/sparklingmare/art/SFM-Animation-BlackJack-684524855