I attached a pic of our cage setup from a couple of weeks ago... just havefun with it... there have been set ups (i change the stuff in the cage around weekly) that kiwi hasnt really liked so i swap it up quicker and some that he LOVED that i felt bad moving everything around on him lol..
Depending on the size of your cage give him a supply of about 4-6 toys and at least three different types of perhches ie. natural wood, rope and a pedi perch your quaker will love it

Keep in mind to hand toys near perchs for easier access
We put out happy hut in the top right of the cage near the back and we never change its location.. just everything else.. it is kiwis safe zone.. of course we take it out for cleaning etc.. we also put a lil baby face towel in it (got about 3 for a buck at our dollar store) so we dont ahve to wash the hut EVERY day or else it gets really tedious if they poop in it.. our kiwi is 5 monhs old and is just mastering poopingoutside of the hut lol
Have fun and be creative! I thoroughly love rearranging my fids cage.. i usually take time the same time i do a good cage cleaning so im taking everything out cleaning, doing a thorough inspection of toys for wear and tear etc and then putting some away and replacing some with different toys each week....