This instructable gives you advice on how to make your own safely, either for use with headphones or as earplug for sleeping.
This instructable involves jamming stuff in your ears and is not suitable for anyone. you'll probably get it stuck and have to spend hours in A&E. I hold no responsibility if you continue following this instructable and result in said situation.
That being said, read on.
Step 1: What you need.
-making the perfect fit earbuds
-Cheap rubbish headphones (preferably in-ear)
-doesn't matter how low quality
- cleaning and moulding
-stop you pulling out your eardums
Step 2: Prep
Step 3: Protect/Damage your eardrums
Step 4: SUGRU!!
Take a 5 gram piece, half it, roll it into a dull point (like picture) and insert into ear. Push in and around securing all gaps, a good fit will close off almost all sound from around you.
At this point if you're missing out the headphones and just making earplugs to block out sound skip the next stage.