When mentioned storing electrons in a container as an electron bottle the difference is the idea of storing each electron not part of an atom inside the electron bottle. Compared to something like a capacitor or battery that store each electron in a more solid perhaps conductive material with each electron attached to an atom.

Also mentioned storing light in a container as a light bottle as perhaps another option.

Also mentioned other possibilities like since each electron don’t stop moving maybe like as zero point energy then can perhaps use that for generating energy like electric current / heat. Also other ideas with generating energy listed in this post. Also mentioned in this post perhaps with each electron able to attract gravity then perhaps if to move to make a gravity wave so perhaps can be as a gravity thruster.