[PhantomGremlin]

Here are dirt cheap earplugs for you, Home Depot sells many similar variations by 3M:

http://www.homedepot.com/p/3M-Orange-Disposable-Earplugs-7-P...

You can take a pair of scissors and slightly trim from the big (non-rounded) end, so that they aren't long enough to interfere with side sleeping, but they are still long enough that you can easily pull them out in the morning.

I haven't tried custom silicone earplugs, but these disposable ones are very soft and comfortable. You twirl them into a smaller thickness and they gently expand once you insert them.

I started using them a number of years ago when the guy in the house next door got a very loud dog that he insisted stay outside at night and/or early morning. So of course the dog did nothing but whine and bark! Fortunately he finally got rid of the dog.

A single "disposable" pair of plugs can last a week, or even a month if you want. The sound effectiveness decreases slightly over multiple uses. But that's OK. They start out really quiet, they claim something close to 30 dB. So if they're only 15 dB after multiple uses, that's OK. You probably don't want total isolation anyway.