What type of onward ticket do we need for a 60-day stay extension in Thailand?

Technically it's 30 days. The solutions are:

- low cost throwaway ticket to nearby destination ~ 1,000 baht with airport tax recoverable (Air Asia, Thai Lion Air etc)

- rent a real ticket for 48 hours on flyonward.com for about 10 dollars.

- solution that involves knowledge of editing software, that I cannot go into on a public forum.

- argue with the airline to accept a ticket in 60 days or no ticket by signing an indemnity agreement that you would be liable for all cost of repatriation should you get rejected entry.

Its not a option from UK as to buy a 1 way ticket from a Airline can cost twice as much as a return the robbing gits.......