Want to get engaged with a bang? How about fireworks!
This would be an extremely expensive alternative compared to say M&Ms, cupcakes or something along those lines, however if you are really looking to make it something over the top special then this is definitely the way to go. I think that this is something that is extremely unique and amazing at the same time. You can do it over the fourth of July and really get engaged at a different time of year than everyone else who mainly does it around holiday time, or you can do it on a personal level just between the two of you but either way it is something that would definitely be memorable.
I think this is a good thing that you could carry through with as well. You could have a fireworks display after your wedding reception or after the ceremony… depending on how you plan it instead of blowing bubbles or things like that, if you have an evening..outside wedding you can give everyone sparklers and just turn it into something cute that you carry through your entire day if you are interested in doing so.