My oven died. Sad panda

So that means it's now much harder to make a freezer stash of lasagna, pies, and more importantly for DH, cakes etc for his smoko. I'd planned on making healthy snacks for DD too once I was on leave, yummy sweets that are still healthy and less processed, but now I can't.

We can't afford a new oven yet but do have a Baby WeberQ. So I can put something in there with the lid down. The problem when using it as a BBQ is that the flame is a ring around the outside so the cooking is very uneven, so I'm thinking I need to put whatever I'm baking in a tray of water.

Anyone got any tips for me?