I had a Chevy Corvair pickup. Pretty solid metal and plastic vehicle about 14 inches long. That little thing took me through many solitary hours playing by myself in the ditch in our back yard where I had roads and stuff.
Tinker toys 4 sure
Bow and arrow (the ones with the suction cups on the end of the arrows)
Match-stick guns I used to carve out of my mom's clothes pins
Stuffed animals (yeah, wanna make somethin' of it?)
Board games such as Checkers or Parcheesi
I used to take playing cards and using a clothes pin attach them to my bicycle frame so that they hit they clicked on the spokes when I rode. You could do at least 4 of them, 2 on each wheel. It made a wondrous sound!
There is at least one member here who in later life worked in the Lincoln Log Factory. My Brother Darrel aka derdlecar. He took me on a tour one time. What a treat! My little guy was all abuzz that day!