Place 2 iron blocks side by side
Place a dispenser above one of the iron blocks
Place a lever or button on the front
Put a white or light gray banner on the front for the door look
Add a stone button or iron trapdoor as a handle
Place a chest or barrel nearby for storage
Use a quartz block or iron block for a cleaner fridge design
Add a slab on top as the freezer section
Decorate with item frames or signs if desired