I had Silly Putty as a kid and loved it too. I always copied colored comics from the Sunday newspaper. Simple times then, didn't take much to entertain me.
We didn’t have either one when I was growing up. I bought it for my kids tho. I remember if you didn’t put Play Doh back in the can it would dry out n crumble n make a big mess! Silly Putty was fun, my kids loved it.
I remember all the above, and let's not forget thinning out the putty to a point where you could place it over your mouth and blow a bubble with it! Such a pleasing popping sound a Silly-Putty bubble made!