T.V.
Hi A.--
Our son is 17 months old and we have a bike trailer for him -- he loves it, and so do we. When the three of us go riding together (my husband, son and me), I can ride my bike up beside him and say hi or play games or point out things for him to look at. Just make sure you get a bike trailer that allows for the seatbelt to be used for one passenger, and make sure the trailer has a front flap on it for windy or wet days.
have fun!
T.