Goal and options: What can I use for piping without a pastry piping bag?
output answer: Cut the corner of a plastic sandwich bag.

Goal and options: shape a soda can
output answer: cut the can apart to make it flat, wrap around an object of the same shape and bake in the oven for 30 minutes.

Goal and options: How to ensure food cooks evenly
output answer:
Don't overcrowd the pan