The idiom "off grid" refers to a self-sufficient or independent way of living, free from the use of modern technology and infrastructure such as electricity, water, and internet. It can also refer to a person or thing that is not part of a larger system or network.

The idiom "by and by" means "in the future, at some point in time". It is a way to express that something will happen eventually, but not immediately or right away.

The idiom "on the line" refers to a person who is directly affected or involved in something, or someone who is immediately available to answer questions or participate in discussions related to a particular topic. It can also mean being committed to a course of action or decision.

The idiom "wrap one’s head around" means to understand, grasp or comprehend something completely. It can also imply the ability to think clearly, logically and make sense of something complex.

The idiom "seventh heaven" is an English expression used to describe a state of extreme happiness or bliss. It refers to a place where one can achieve happiness beyond anything they could imagine.