ahh sounds like Glenn. He is happy to play with EVERYTHING but then its all to hard to put it away.

Go in, pack up all his books & when he can learn to look after them he can have them back. tell him that there are many many many children out there who would love to have just ONE book to read but have none. So untill he can learn to look after them he gets none at all.

I did this with my boys awhile back & it helped.