Well Ryanair aircraft don't have seat back pockets so sick bags are not provided in the usual way, you may be able to request one, as to the cost
Well that has scuppered that plan then!
Well, how about replacing all of the fleets seats with commodes and incorporate a 'relief charge' into the cost of the ticket?
The benefits of this would be manyfold.
1) No more disturbing fellow pax when bowel or bladder relief is required.
2) The removal of the toilet cubicles would allow further rows of seats which would enhance the revenue of each sector.
3) Old copies of the Daily Mail could be used for 'wiping residual waste' which I am sure would keep the tree huggers happy.
4) Selling the generated waste to provide fertiliser furthermore enhancing the green credentials and profits of Ryanair.
5) Sell raffle tickets with the winner receiving a roll of Andrex Quilted.
No Michael, no thanks or profit share required - just my suggestions to save the planet!