Anything extra is always appreciated lol . One of my favorite guys brings me some bud for me to have later for myself and a little weed pen lol he knows me well .  

Even if it's 5$ shoot that could be lunch I'll be thankful lol

Almost everyone shops online. I like gift cards to reduce my pure cash "spending." I can buy a gift card along with some groceries and it doesn't look suspicious to the SO.

And to your second topic, if you don't hear back with some sort of acknowledgement of the gift, that tells you a lot about her. That said, I've always received a nice thank you

I do this to survive, as I think most do. I can't pay my electric bill or buy groceries with an iTunes gift card. If you really really prefer to tip with a card I would suggest a Visa/MC gift card that can be used anywhere.  

I've only been tipped twice and I thanked them for it specifically.

but real time OTC or vouchers are ok too ...

Yes, if you are really having a GFE experience, there is a give and take of conversation that is similar to any social scenario. A simple thank you is not too much to expect.

Especially a Visa/MC? To me that makes zero cents. Even if ur standing in line at the store, get cash back!

Only 1 exception- if a gift card was gifted to you and you wanna give it away

#justsayi

Whether it is in the form of a gift card or extra donation. It is always appreciate and should be thanked properly for! Just my opinion.  

Kisses,
Holly