Sharing a toy is a learned concept for most toddlers. In fact, most toys are really boring until someone else plays with it. Then it becomes the best, most sought-after toy in the room. Here are some examples with Ian & Carson.
The riding toy cannot accomodate two riders, as much as Carson tried to fit on Ian's lap. Notice who has the yellow & blue rake.
Now who has the rake! And back to Carson! In the end, the lawnmower worked for Ian and Carson is playing with his shoebox.