@Ebbie ******
I would be VERY VERY CAREFUL recommending "onward" fake tickets . . .there has been a meeting of Phuket Immigration officers, and the topic at one point was centered on the "fake tickets" . . Word for word: "Phuket Airport Immigration has also seen a surge in counterfeit or unpaid return tickets ‒ documents created to make it appear as though a traveller intends to leave Thailand.
"Many passengers create fake tickets by booking without paying or confirming their return flight," Col Rasarin said. "We have strict measures in place to detect this. If a ticket is found to be counterfeit, or if payment has not been made, the traveller will be deemed to have not declared their innocence from the start and will be immediately deported."