Civilian construction machinery can delay military movement

What civilian equipment besides firearms would be useful against an amphibious invasion?

Heavy construction machinery can rapidly create obstacles that force an attacker to stop and bring forward engineering equipment.

Heavy civilian equipment can support defensive preparations as well as construction work. Communities on the Russian approach to Kyiv are cited as an example. Access to diggers and other machinery allowed them to build substantial obstacles. Removing those obstacles required engineering equipment and could delay an advancing force for hours.