Terrific idea to ask this question, CG, and it's something performing musicians need to think about seriously.
I don't play in a band and usually don't play very loud at home. However I do wear hearing protection when running power tools, since woodworking is one of my favorite past times. I find these ones (below) work best, and I'll just have them around my neck until I turn on the saw, planer, jointer, etc. They reduce the sound by around 25 db, which hopefully keep me from going deaf in older age.
ACOUSTICS: Cordoba D10-CE / LaPatrie "Concert" / Takamine GD30CE-12 / Norman ST30
ELECTRICS: EP Les Paul Custom Pro / Gretsch Streamliner G2420T / EP Thunderbird Pro IV bass
AMPS: Peavey "TF" VK212 / Traynor AM150T / Fender Rumble 150
EFFECTS: Boss ME-80 Multi-effects / Ibanez WD7 wah / Grand Orbiter V3 Phaser