As the county town of Gwynedd, Caernarfon is a popular tourist destination with an open air market every Saturday. Whilst there isn't a massive selection of Caernarfon toy shops to choose from, the ones that are based here sell some really interesting products that would be hard to track down without travelling significant distances.
Whilst all the usual popular toys can be purchased from the local Argos. Worth checking out is R A Jones & Son. This Caernarfon toy shop sells a wide range of toys, children's clothing and nursery products. If it's kids bikes you're after, Beics Menai Cycles on Slate Quay can offer a good choice, as well as a full after sales repair service.