Secure street lamps to the Styrofoam base of your village display by adding a thumbtack to each lamp base with a dab of hot glue. Press each lamp base into the Styrofoam along your path or street. No toppling over!
Larger street lamps may require two thumbtacks for better stability and balance.
When you're ready to take your display apart to move or store it, the thumbtacks previously applied with hot glue will pop off of the lamp base! This will only work if you used hot glue on a non-porous surface.