I used to have the tuner pedal early in the chain, but recently I've found it more useful as last pedal. That way I can troubleshoot my signal chain without the amp being on / audience hearing noises. Might not work for everyone.

Second on the Snark because it uses vibrations. It'll tune an unplugged electric guitar.

I found that my Snarks kept getting eaten by the dog so downvotes for making a dog-friendly tuner. I now have a strobe clip-on tuner that does ‘sweetened’ tuning and that aside, it’s much easier to read and apparently does not taste good to the dog.

I like my Snark, but I'm a bit troubled by the instructions saying not to leave it on any instrument with a polyurethane finish, which I think is most guitars. Not sure how much I should worry about that.

Funny, I have a similar tuner that is permanently attached to both poly and (significantly more fragile) nitro guitars, and never saw anything of the sort happen.

Also I thought poly was virtually indestructible, those guitars never age...

If you want something permanent, I can recommend a D'addario. They can attach to the tuner screw and won't be in conctact with the wood.