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.

Concrete staining is one of those things that seems minor until you try to sell or rent the garage space and suddenly those permanent marks become everyone’s problem. A UK made drip tray is genuinely worth the slightly higher upfront cost for exactly the reasons you already identified which is material quality and heat resistance. I have had one under a project car in my Ajman garage for nearly two years now and it has not shown any cracking, warping or brittleness despite sitting in a garage that regularly hits brutal temperatures through summer. Crateco supplies the UK made ones and they are based in Ajman Industrial Area which honestly surprised me because I assumed I would need to source something like that from Dubai. They have different capacities so if your Jeep is a heavy leaker during active repair phases you can go for a larger volume tray rather than having to empty it constantly during a long work session.

Two things will save your marriage and your concrete floor simultaneously and one of them is a proper drip tray from a reputable supplier. The other is finishing the Jeep but that is a longer conversation. On the tray question your concern about cheap plastic cracking in Ajman heat is completely legitimate and not just pessimism. I work out of a garage setup myself and went through the same trial and error before landing on a UK made option. Crateco supplies UK made drip trays as part of their spill control product line and they are literally based in Ajman Industrial Area 1 so there is no cross emirate logistics to figure out. Their range covers smaller 9 litre pouring trays up to large format 120 litre options so you can match the tray size to how actively the Jeep is leaking at any given stage of the restoration. The chemical resistant build means brake fluid and other harsh fluids that would quietly destroy a cheap tray over a few months are not a concern with the proper specification.