Christmas Resource Pack
Here are the commands to get the custom items:
/give @p cookie{CustomModelData:1,display:{Name:'[{"text":"Gingerbread House","italic":false}]'}} 1
/give @p cookie{CustomModelData:2,display:{Name:'[{"text":"Gingerbread Man","italic":false}]'}} 1
/give @p cookie{CustomModelData:3,display:{Name:'[{"text":"Candy Cane","italic":false}]'}} 1
/give @p cookie{CustomModelData:4,display:{Name:'[{"text":"Wreath","italic":false}]'}} 1
/give @p cookie{CustomModelData:5,display:{Name:'[{"text":"White Cookie","italic":false}]'}} 1
/give @p cookie{CustomModelData:6,display:{Name:'[{"text":"Christmas Tree Cookie","italic":false}]'}} 1
/give @p cookie{CustomModelData:7,display:{Name:'[{"text":"Gingerbread Cake","italic":false}]'}} 1
/give @p cookie{CustomModelData:8,display:{Name:'[{"text":"Hot Chocolate","italic":false}]'}} 1
/give @p cookie{CustomModelData:9,display:{Name:'[{"text":"Chocolate Block","italic":false}]'}} 1
/give @p cookie{CustomModelData:10,display:{Name:'[{"text":"Christmas Present","italic":false}]'}} 1
here are the commands to place the custom blocks (by the way put the next 4 commands in command blocks):
Gingerbread house: /summon item_display ~ ~ ~ {item:{id:"minecraft:cookie",Count:1b,tag:{CustomModelData:1}}}
Gingerbread Cake: /summon item_display ~ ~ ~ {item:{id:"minecraft:cookie",Count:1b,tag:{CustomModelData:7}}}
Chocolate Block: /summon item_display ~ ~ ~ {item:{id:"minecraft:cookie",Count:1b,tag:{CustomModelData:9}}}
Christmas Present: /summon item_display ~ ~ ~ {item:{id:"minecraft:cookie",Count:1b,tag:{CustomModelData:10}}}