The new Copr Bay bridge was installed in the city centre over the weekend as part of Swansea's £1 billion regeneration scheme.
Luke Datson said he believed he did not need a license for what he was doing as the products contained less than 0.2% of the active cannabis compound THC.
Wales and Tottenham footballer Gareth Bale has donated 300 festive hampers to help feed families in Swansea over Christmas.