parent /carer and toddler group search

[corij]

hi i look after my 17 month old gs wednesday afternoon,all day thursday and friday most weeks at his home near pontypridd.
i am looking for somewhere nice to take him that is reasonably cheap and within bus travel of pontypridd.
i was thinking toddler groups or similar, have tried cafejunior in cardiff ,lovely, he really enjoyed his time there. but a bit expensive for every week.
thanks in advance
from corij