(Though airlines are likely to lay on extra flights and, in BA's case, use bigger planes, these seats will be sold at a fat premium).
The low-slung RoboMower cannot negotiate hills, however, and it can get stuck on backyard swing sets unless you lay down extra perimeter wire.
Elsewhere, schools whose results - and therefore reputation - are going up have had to lay on extra open evenings to meet parental interest.
If this series is going to have some kind of revisionist feminist agenda, I may have to lay in extra reviving violet macaroons.
Mr Curtis said increased need during school holidays was so pronounced that the Trust was encouraging its foodbanks, which are run by local teams, to lay on extra hot meals for children during the school holidays.
Rich families lay on extra tutoring for their children in what Jiang Xueqin, a Canadian-Chinese education scholar, described as an "arms race" among households looking to increase their child's chances.
This puts up the cost of the sending and receiving equipment but means, for example, that it is possible to increase transmission capacity 40-fold by sending 40 separate channels down one fibre, rather than having to lay 39 extra cables.But there is a problem.
As a result, the proportion of pupils who got their first choice of secondary school went down slightly this year – 84.1% of 11-year-olds received offers from their first school preference, down from 84.2% in 2015 – suggesting local authorities have worked hard to lay on extra places.
The China free trade agreement is a weighty 17 chapters plus related material, made up of: the formal text (which has been agreed to by Australia and China), side letters which lay out extra conditions not in the agreement two memorandums of understanding (MOU).
There was additional security after Friday's terrorist attacks in France, Tunisia and Kuwait, with the Met's deputy assistant commissioner, Helen Ball, saying the force would lay on extra security "to help protect and reassure the public" and to make sure "the public are encouraged to continue with their plans to attend or take part in events as normal".
