Pre-set firecrackers on level 165 look like they might be quite useful in collecting the gold nuggets. However, we do not recommend detonating those manually. Instead, you should make a more powerful power-up and then detonate them all together. This way collecting the gold nuggets will become a much easier task!
Also, note that if the earth tiles have already moved down, it is better to forget about the firecrackers on the top, unless you are really close to getting your next Lightning.
You should also check out this video that shows how we got through level 165.