M.J.
My toddler does the same thing, but it seems when we go to other people's houses with toys, he'll play with those. Something I found that helps, I split in toys in 1/4. 1/4 in the living room, 1/4 in his bedroom, 1/4 to grandmas and the rest in the closet. I rotate them every once in a while so he always finds new stuff to play with. Maybe that could help. Oh, I also hide toys in little places, shelves, cabinets he's allowed in, under the table etc. so when he's roaming around he'll find a toy in an unexpected place and play with it. Just some thoughts.