I went to the Sesame Street General Store many times when it was still around. Unfortunately, I think all the stores closed in the late 1990's. They were kind of like Disney Stores you see in the mall, except they were Sesame themed, of course. You could buy items for both kids and adults. During my trips there, I purchased several shirts, a "monster" watch, Grover socks and coffee mug, and a few other items. I was like a kid in a candy store. We would make special trips down to Portland just to go there.
I remember they had a big animatronic Oscar who would pop out of his garbage can out in front of the store, which I thought was cute.
The two I went to were in at Lloyd Center in Portland, Oregon, and in Torrance, Ca., but unfortunately, like I mentioned, the stores are long gone.