Guess yourself

Witches pots and wizard’s brew 
Sparks and pans and pots of stew 
And everything you’d least expect
Are all right here in this house
Which hasn’t been visited by even a mouse 
You’ll have to come here 
So will all in the sphere 
Where a load of surprises are waiting for you
So all who come will receive them too 
And all who come will be put on a shelf
And where that is you guess yourself