What are the rules in Canada for sending/recieving a toy from across the border?

I live in British Columbia, and have a friend in Reno who would like to send me a toy that I have been looking for. However neither of us wants to get in trouble if there's some strange law saying that you can't send toys across the border. Both of us are above the age requirement to purchase toys, and the product will be paid for and bought legally. It will be sent through the mail to a PO box that I rent.