NOTE: the concept of awens is very similar to a combination of Stands and Personas

Wild Card: Similar to the Persona concept, where the Wild Card allows you to use multiple persona, this would also allow you to use multiple awens.

Half-Ghost: A ghost-based awen that awakens when its user dies and brings them back in a state of limbo as a half-ghost.

Femtomite/Orgamech: The awen manifests as a swarm of adaptive femtomite/orgamech. Which may not multiply indefinitely but also improve the user.

Video Game: It would be like Sung Jin Woo and Han Jee Han's Video Game Physics, but with several improvements such as the Multiplayer feature (extending power to allies).

NOTE: They are all awens