The Kids Pantry in Garran is doing vacation care, it is not cheap but you can choose all day or just part of the day. www.kidspantry.com.au
mpowerdone is also doing vacation care and is a mix of sport/dance/art. www.mpowerdome.com.au
I suppose it depends if you are south or north.
Woden Valley Gymnastics have full or half day sessions.
http://www.wodenvalley.netCheers
Robyn