we throw balls around the house...either the cat plastic ones w/bells inside or i make small ones out of tinfoil(i make them in a room without them because the tinfoil hurts their ears)
but i make them hard and round so they are just like hard hockey pucks they kick around.
don't make them too small for them to put in their mouths.

plus we have string toys we toss up in the air for them to jump up.

and we have fly toys that we circle around like immitating a bird...it freaks them out and they all want to carry it in their mouth (after jumping up and catching it)while i am chasing after them with me holding onto the handheld end...don't want them to wander off with it and choke.

i put all the string toys away after playing.

and of course we have the lazer lights for them to get good excercise running after it.

but they all seem to entertain themselves too.

plus the open windows when it's warm enough to open them.
or they look out the closed ones.
we just bought a home with land that is really nice for them to look out the windows.
(no neighbors anywhere in site...nor the street is in site)I have had enough of neighbors taking over our yard as if it's ok to walk around anytime they want on our lawn and their dogs and cats using it to pee and poop in.
Finally Peace! I never dreamed having no neighbors would make me this happy.I sound terrible but it really is nice.try it if you can someday.(if you can find space in this overcrowded world...lol)
we built a new beautiful home (BEFORE buying this 10 year old home)and i was never so unhappy in my life with only a half acre and the nosiest plus rudest ,loudest neighbors i have ever met.

we also have a bird nest that was put their by the old owner of our home.
she put one of those wooden shelves(very small one for trinkets)and nailed it to the house under the roof of our front porch.just outside the door up above.
the birds go in and out without squirells ruining it.it's really a great idea she had.
we have a small round wondow where a cat can sit on it and is in perfect veiw of the wooden trinket holder outside rthat now has a full nest.