Crittal glazed wall. ( safety glass )
Bamboo poles as a divider.
Sycamore branches as a divider.
Living olive/citrus tress in pots.
Pendant lights hung low over dividing bar area.
Sliding screens.
Roller blind.
T&G built in divider.
Old doors hinged as a divider ( will need securing to be safe )

There’s a few to get you started ! :-)