When baking a cake in a loaf tin, rather than buying expensive liners use silver foil instead. Just get the mould of the tin by putting the foil on the outside of the tin then transfer it inside for a perfect fit.
Before putting your cake mixture into the oven, tap the cake tin on a counter to release any large air bubbles in the mixture.
When baking cookies if you run out of sheets to put them on then just turn a baking tray upside down and drop the cookies on that.
Don’t crowd the oven with Baking tins. The pans should never touch each other or the sides of the oven or be placed over or under each other on the racks.