Me too, Lloyd. If these people on low salarys work their nuts off trying to please you, be it at a filling station in Cyprus, where they fill it up for you (and while it's doing that on auto cut-off, he's also cleaning your screen) who wouldn't dream of not adding a €1 cash tip in his hand? Their smile (and uttered words of thanks) says it all...
Or in a restaurant, if you've had nice attentative service to all your needs and requirements, I've always made sure to tip the waiter cash in hand before going to the counter and settling the bill (usually rounding it up).
Have actually 'tipped' in local kiosks hundreds of times, too. Where they have a local charity collection box, and you throw a few coins in for a worthy cause. Never fails to get a thanks from the shop owner, and me going home with a happy warm feeling...
Cheers- AL

Gone but not forgotten...