Vault-Tec Bobblehead

The Vault Boy bobblehead figures were promotional Vault-Tec items.

In Fallout 3, each of these bobbleheads permanently increases one of the 7 statistics or one of the 13 skills of the Player Character. Two of the Fallout 3 achievements are about collecting 10 or 20 of them.

The bobbleheads which raise SPECIAL scores will not increase a statistic over the normal maximum of 10. If your score in the relevant SPECIAL statistic is already 10, the extra point will be wasted. Likewise, the skill bobbleheads cannot raise your skill past 100, and additional points will be wasted.

The player can store the bobble heads on a special stand found in the player's owned house.

Stats
will increase S.P.E.C.I.A.L stat by 1 point.
 * Strength - Megaton - Lucas Simms' House. On desk in the bedroom on the second floor. "'It's essential to give your arguments impact.'"
 * Perception - Republic of Dave - Museum of Dave
 * Endurance - Deathclaw Sanctuary - Deathclaw Sanctuary Entrance
 * Charisma - Vault 108 - Cloning Lab on top of a table in a room with many beds.
 * Intelligence - Rivet City - Science Lab. On one of the desks in the center of the lab.
 * Agility - Greener Pastures Disposal - Office
 * Luck - Arlington Cemetery North - Arlington House, in the basement.

Skills
will increase skill stat by 10 points.
 * Barter - Evergreen Mills - Market Bazaar - In a dark cave-nook, in the corner of the room to the right of Smiling Jack (trader). Jump over the work bench, it's on the right-most shelves.
 * Big Guns - Fort Constantine - CO Quarters
 * Energy Weapons - Raven Rock - on the right desk in Colonel Autumn's bedroom: after you pass the huge door from section 2B to 2C, when two Enclave soldiers come out of the right door, take the left one.
 * Explosives - WKML Broadcast Station - Sealed Cistern, the sewer behind the station.
 * Lockpick - Bethesda Ruins - Bethesda Offices East on a desk with an active lamp.
 * Medicine - Vault 101 - Dad's desk. It can be obtained before you take your G.O.A.T., during your escape from the vault or during your brief (optional) return to Vault 101. "'The smart man knows a bandage only hides his wounds.'"
 * Melee Weapons - Dunwich Building - Virulent Underchamber, in the center of a room near the exit to Dunwich Building.
 * Repair - Arefu - Evan King's House. "'Why go down with the ship when you can try to fix it?'"
 * Science - Vault 106 - Living Quarters, on a shelf, east most room.
 * Small Guns - National Guard Depot - National Guard Armory: sitting on a shelf in the sealed storage room in the basement.
 * Sneak - Yao Guai Tunnels - Yao Guai Den: On top of a metal box left of the big pool of water
 * Speech - Paradise Falls - Eulogy's Pad
 * Unarmed - Rockopolis

Behind the scenes
The bobbleheads were also used as a Fallout 3 promotional item by Bethesda Softworks and are included in the Collector's Edition of the game.

See: Fallout 3 promotional items.