Youngsters at the BMX track at Porth in Rhondda Cynon Taf said it has given them "something to do" - and is "great fun."
The initiative has been picked out as one of the best in Europe for crime prevention.
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Six companies have announced jobs in the financial and manufacturing sectors, on the eve of the UK Investment Summit.
There will be plenty of cloud and fog around overnight. It looks dull at first on Friday morning, before rain returns across much of Wales.
Tooth extractions among 5 to 9-year-olds increased last year, according to figures obtained by ITV Cymru Wales.