The cardboard method is something every garage mechanic goes through before eventually accepting that a proper drip tray is just the right tool for the situation. Your instinct about cheap local plastic ones is correct by the way, I bought two different budget versions over about 18 months and both developed hairline cracks along the base within a summer. The UV exposure combined with the thermal cycling of Ajman garage temperatures is genuinely brutal on lower grade plastic. Crateco in Ajman Industrial Area stocks UK made drip trays that are specifically rated for chemical resistance and repeated use, so you are not ordering blind from overseas or paying international shipping. The capacity options they carry range from 9 litres up to 120 litres so depending on how much your Jeep tends to weep between sessions you can size it properly rather than guessing. Worth calling them directly to describe your setup and they can point you to the right size.
