For the most part Elsie is really a good puppy, but I think she is addicted to paper.. Eating it. Shredding it, stealing the whole roll of toilet paper and throwing it all over the house... You name it. The dog is obsessed. Initally, I thought she was doing it because she was bored but I really don't think that is the case. She can be playing with her toys, completly distracted and you get up to grab a napkin or a tissue and she will try everything she can to grab it out of your hand.

Is there a way can we do to discourage this behavior or she always going to be obsessed?

 We have been working on the "leave it" command. Sometimes she gets it, other times she is so stubborn! ( A stubborn shorthair? That's hard to believe! ) I have also tried the trade up method, but like you said she is less than enthusiastic sometimes so maybe I will trade out the "old, boring" toys for some of the ones I have tucked away.

You're doing right to have some toys tucked away. In addition to food, treats, and activity we wanted Bella to know we ultimately controlled the fun too (all the more reason to think we are the GREATEST leaders ever lol). So, I never had all of her toys out at once. Especially ones that held a lot of interest (in the puppy stage, ropes were here favorite so after breakfast and a brief training session I allowed her to have some rope time), they were saved for my secret weapons lol. Of course, now that she is older we fizzled on this. But, when we get a new toy, boy does she listen intently and perform 100% to earn it lol.

One thing that I think helped Bella pick up on the leave it command quickly was that I never rewarded her with what I told her to leave...this way she learned to become more focused on a different better outcome. For example, I used treats while training leave it. I would put her in a sit/stay (use a check cord at this point in time if you pup's stay isn't great) I would say "leave it" and toss a treat a couple of feet away of. Of course she would stare at it. If she attempted to go for it I would correct her with a "ah ah" and gently put her back in her sit/stay (without repeating the command). Eventually she would look at me for further instruction (or just to question why in the world she couldn't go get that lol)...once her attention came to me I would praise and reward her with a treat I had in hand...never the treat that was tossed aside. It all takes time, but you sound like you are on a terrific path!

That's awesome!! My idiot still won't toddle off to sleep if there are people here

I think this is part of their prey drive, typical GSP puppy stuff, I've had three and they all did this.  Training the leave it command and trading for treats should work but it takes time.