What are /r/EuroCoins' favorite Products & Services?

From 3.5 billion Reddit comments

I have This App (Android) on my phone that comes in handy for identifying, but like /u/Heirl00m, I just made my own spreadsheet in google docs to track what I actually have...it's much easier to see "at-a-glance".

My spreadsheet. Feel free to use/alter/whatever if it'll help you out! :)