Just thought I would let you know aldi has some bike stuff for sale this week. A towball mounted bike rack for $40, bike work stand for $35, and a 2 seat trailer for $90 http://https://www.aldi.com.au/en/special-buys/wednesday-13-november-2013/wednesday-detail-wk46/ps/p/kids-two-seat-bike-trailer/. Not sure if they are any good.
Cheers
MAS
Cheers
MAS