You can wear wireless earbuds (designed for sleeping with very slim profile in the ear) for sleeping, which pair would be great for sleeping and would you like they are loaded with soothing sounds or connected with your phone for music.
Like earplugs, sleeping earbuds have great noise isolation, they are pretty small, extremely lightweight and comfortable to wear (even for side sleepers). And with music or soothing sounds played, your brain will switch focusing on these pleasant sounds instead of unwanted sound like snoring.
If they are Bluetooth connected with your phones, and the battery will drain faster than stand-alone playing mode.