Is it a gift or not?
The IRS definition of gift you quoted has "full consideration ... received in return". If your friend's help is not contingent upon your monetary offer (as is the case in all your scenarios I believe?), then it shouldn't be viewed as consideration in return of your money, right?
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Is it a gift or not?

### Response:
The IRS definition of gift you quoted has "full consideration ... received in return". If your friend's help is not contingent upon your monetary offer (as is the case in all your scenarios I believe?), then it shouldn't be viewed as consideration in return of your money, right?