Here are the three decks that I've made by myself without any ideas taken from other places. Though, they are not made to be competitive and they are only made for pure fun. Without further do, let's move on to these decks.
Totems, Mechs, and Bloodlust:
This was made for a fun deck theme (based on Nightmare Amalgam and Hench-Clan Hag), to empower mechs and totems (Primal Fusion, Thing from Below, Junkbot, etc.). As I thought it would suck, it is actually a playable deck. This is just a regular token deck, but much weird and fun.
This deck revolves around Mutate! It is an experimentation deck to see how viable Mutate is, its work very well on weak body battlecry minion such as Novice Engineer, Former Champ, and Defender of Argus. With support to Shudderwock if you're running out of answers.
This deck is inspired by Grand Archivist and the Big shaman archetype in wild format. Grand Archivist allows you to cast a random AoE based spells, fill your board with minions such as rain of toad, restoring your health to your hero, and drawing cards, while you can keep playing big minions. It is very slow deck has no Hagatha's scheme and Hex, so this deck is a bit unplayable. But it's still fun if your opponent doesn't play aggro.