Here are mine:
With a Box of Scraps- Scrap metal can be used to maintain and repair power armor (albeit less efficiently than with other power armor). Requires both high repair and high science. Icon is Vault Boy wearing Tony Stark's original armor.
Major Leaguer- Increased swing speed with 2-handed melee weapons, and increased velocity of thrown weapons such as grenades. Requires points in melee and explosives skills, and Little Leaguer, if it's a perk in the game. Icon is Vault Boy in a Boston Red Sox uniform.
And Chew Bubblegum- Consuming bubblegum gives temporary VATS performance. If you don't have any more of it in your inventory, it improves VATS even more. Image is Vault Boy holding a shotgun and wearing sunglasses.
Minuteman- Increased damage with hunting rifles and similar weapons. Image is Vault Boy dressed like a continental militiaman.