What are the best practices here? Is there anything that I need to be careful of regarding privacy? I see people often putting donation addresses on youtube an the like...
Use a QR code version of your bitcoin address, that's what I'd do.
There's not much else to consider. Maybe you want to use different addresses for different venues or gigs, etc.
Oh one more, use an exchange address so no one can take your address and see a balance and decipher how much you've earned via tips. Exchange addresses are funded then emptied as the Exchange takes the bitcoin from your address and moves it to theirs.