Custom Heads!
Here are some awesome heads that you can wear inside of Minecraft! All you need to do is copy the code of your desire into a Command Block and activate it!
I'll occasionally add some more heads, but probably not often. Also, these heads should work properly for both 1.7 and 1.8 (hopefully, I haven't tested 1.7 yet, but I assume that they do).
Peashooter: /give @p skull 1 3 {display:{Name:"Peashooter"},SkullOwner:{Id:"59855172-ac5c-449c-bd61-f649193859f1",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjExNzI3Y2I1MDIxYTQyMzU1NzBhODVkNGE3NTVkNzE1MjFlODU5ZTg5NGZjNmEyYTcyNmJiNWU1MjQ5NTRjNiJ9fX0="}]}}}
Sunflower: /give @p skull 1 3 {display:{Name:"Sunflower"},SkullOwner:{Id:"678eb950-5e65-4602-a1f3-bf5b0a35dca9",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDRjMTE4YWIwN2NhZTYyMGE3ODM1MjIyNmQzZDIxNDdjYmVjZTg4Mzc4N2QyYzQ4N2I2Yjg2YzQxYmZmMSJ9fX0="}]}}}
Wall-nut: /give @p skull 1 3 {display:{Name:"Wall-nut"},SkullOwner:{Id:"fade2892-daea-46cb-bf69-14fab6fb95dd",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjVlZDU5NDYxMmQwYjg3MDEyNTI2N2FhZGJlNzBiM2IxMjkzOTNmZTVlNDJjY2U0YTNiNWU2YjMyYjMxMSJ9fX0="}]}}}
Pea-nut Head Top (Right Way Up): /give @p skull 1 3 {display:{Name:"Pea-nut Head Top"},SkullOwner:{Id:"d665d54b-6077-4f1a-a262-095b1cb8f968",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYWM2ODY5NWYyODcxMWExZTVkNGNkNTExODMyZjM0ZWJlZDg4NGFiYmE0NzhjNjcxNjI2YzEzMjliNzIyNyJ9fX0="}]}}}
Pea-nut Head Bottom (Wrong Way Up): /give @p skull 1 3 {display:{Name:"Pea-nut Head Bottom"},SkullOwner:{Id:"03cabc03-d67b-4e01-ba46-584a3df8e28d",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNTVkNTQ0OWM1YmE0OTg3ZDk0MTkzNGM0NjllOWMxZmNmZDkxMDFlOTVjOTBmZjJiODhiNzI4OTljZTdiMWMifX19"}]}}}
I'll occasionally add some more heads, but probably not often. Also, these heads should work properly for both 1.7 and 1.8 (hopefully, I haven't tested 1.7 yet, but I assume that they do).
Peashooter: /give @p skull 1 3 {display:{Name:"Peashooter"},SkullOwner:{Id:"59855172-ac5c-449c-bd61-f649193859f1",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjExNzI3Y2I1MDIxYTQyMzU1NzBhODVkNGE3NTVkNzE1MjFlODU5ZTg5NGZjNmEyYTcyNmJiNWU1MjQ5NTRjNiJ9fX0="}]}}}
Sunflower: /give @p skull 1 3 {display:{Name:"Sunflower"},SkullOwner:{Id:"678eb950-5e65-4602-a1f3-bf5b0a35dca9",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDRjMTE4YWIwN2NhZTYyMGE3ODM1MjIyNmQzZDIxNDdjYmVjZTg4Mzc4N2QyYzQ4N2I2Yjg2YzQxYmZmMSJ9fX0="}]}}}
Wall-nut: /give @p skull 1 3 {display:{Name:"Wall-nut"},SkullOwner:{Id:"fade2892-daea-46cb-bf69-14fab6fb95dd",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjVlZDU5NDYxMmQwYjg3MDEyNTI2N2FhZGJlNzBiM2IxMjkzOTNmZTVlNDJjY2U0YTNiNWU2YjMyYjMxMSJ9fX0="}]}}}
Pea-nut Head Top (Right Way Up): /give @p skull 1 3 {display:{Name:"Pea-nut Head Top"},SkullOwner:{Id:"d665d54b-6077-4f1a-a262-095b1cb8f968",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYWM2ODY5NWYyODcxMWExZTVkNGNkNTExODMyZjM0ZWJlZDg4NGFiYmE0NzhjNjcxNjI2YzEzMjliNzIyNyJ9fX0="}]}}}
Pea-nut Head Bottom (Wrong Way Up): /give @p skull 1 3 {display:{Name:"Pea-nut Head Bottom"},SkullOwner:{Id:"03cabc03-d67b-4e01-ba46-584a3df8e28d",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNTVkNTQ0OWM1YmE0OTg3ZDk0MTkzNGM0NjllOWMxZmNmZDkxMDFlOTVjOTBmZjJiODhiNzI4OTljZTdiMWMifX19"}]}}}