For those who smoke other 'weed's, yes, catnip can be smoked.
It's one that gets included in herbal smoking mixtures.
Some report a mild euphoriant from it in this fashion, but others consider that a bit of hype. I suspect variety and particular plant matters there. It can also be a really harsh smoke apparantly.
Yes, it can be made into tea from fresh leaves or from dried. Try the flowering tips if you've got some growing just now.
Best kept just below the simmer/boil. Boiling drives off some of the stuff you want to ingest.
Cats like the bruised stuff and some will roll in it and crush the plant to compost. Healthy growing plants they don't seem to notice.
The old comment was that if you wanted it for a herb then grow from seed or be prepared to protect it until it's very well established, or the moggie will have it
None of my cats have ever looked near the dried stuff in toys, but crush a couple of leaves and roll the toy in them and put it in a polybag overnight and the cats found it irresistable.
cheers,
Toddy