Over 10% of spending on toys is adults buying things for themselves

"The profitable ‘kidults’ market is continuing to grow as new data reveals that adults spent £383 million on toys for themselves in 2017.
According to the NPD, the kidult market has grown by eight per cent in value over the course of last year and now amounts to 11 per cent of the total toy sector; a rise of £30 million in value since 2016.
To put that in to context, £1 in every £9 spent on toys today is adult buying toys for themselves.
The latest results results from the toy industry tracking group reveal that millennials account for almost half (48 per cent) of the spend among grown ups buying toys for themselves, while Generation X-ers account for 28 per cent and Boomers account for 24 per cent.
Among the millennials market, 62 per cent of the money spent on toys for adults is by young parents. Another four in 10 (38 per cent) are not yet into parenthood and many of this young group are fans of pop-culture, expressing their fandom by buying toys."

Source:  Toy News, 17th April 2018

Note - It's not clear whether this is global, or UK only.  I'm assuming that it's global (but currencies are in sterling as it's a UK publication)