Can I sell my own NFT made of different reddit collectible avatars?

This might be a weird question but is it possible to create my own NFT using parts of 2 or more collectible avatars and use one smart contract to sell them as a bundle? What I mean is if I bought 3 avatars of one collection could I create my own NFT combining elements of each avatar and sell them as a new one? Once someone buy that NFT those 3 avatars will be transferred to the buyer so they can recreate the avatar I listed. If I code my own contract could it be done?

If I own avatars from different collections and put them together as a "frankestein" and those items are sold out can I sell that avatar as a new NFT? Of course respecting all contracts of each item... I think it could bring a special value to the collectible avatars as a whole. From the very beginning I thought some of them would look cool combined and it's something you can actually do as reddit allows to combine each element. As you can't sell the items individually and you have to sell the whole avatar as a whole what do you think about this? It's just an idea, if you think it could be done or think it's wrong please feel free to tell your opinion :)