Hydrogen: A simple cartoon of a hydrogen atom, with a single proton in the nucleus and a single electron orbiting around it.
Helium: A cartoon of a helium atom, with two protons in the nucleus and two electrons orbiting around it.
Lithium: A cartoon of a lithium atom, with three protons in the nucleus and three electrons orbiting around it.
Beryllium: A cartoon of a beryllium atom, with four protons in the nucleus and four electrons orbiting around it.
Boron: A cartoon of a boron atom, with five protons in the nucleus and five electrons orbiting around it.
Carbon: A cartoon of a carbon atom, with six protons in the nucleus and six electrons orbiting around it.
Nitrogen: A cartoon of a nitrogen atom, with seven protons in the nucleus and seven electrons orbiting around it.
Oxygen: A cartoon of an oxygen atom, with eight protons in the nucleus and eight electrons orbiting around it.
Fluorine: A cartoon of a fluorine atom, with nine protons in the nucleus and nine electrons orbiting around it.
Neon: A cartoon of a neon atom, with ten protons in the nucleus and ten electrons orbiting around it.
You can also draw more complex diagrams of atoms, showing the different electron shells and orbitals.