  We study the entire energy spectrum of an electron droplet in the lowest
Landau level. By exact diagonalization calculations, we find highly excited
states in the middle of the spectrum that display unexpected density
distribution and pair correlation. We show that these exceptional excited
states contain tightly bound electron bubbles with local filling $\nu = 1$ that
form various ordered structures. Remarkably, these bubble excited states are
shown to exist for both the $1/r$ Coulomb interaction and the $1/r^3$ dipole
interaction. The experimental realization of bubble excited states in moir\'e
materials under a magnetic field is also discussed.
