What are safe toys for rabbit as they always what to chew

Lots of things!

Old phone books are great, they chew them and dig at the pages.

Empty toilet rolls stuffed with hay.

Paper mobiles... I use a coathanger and attach strips of paper to it... they love running through it and chewing it.

Cardboard boxes are great... I cut holes in them and join a few together... makes a nifty tunnel and they can chew it!

Altenweg is our bunny expert on this site, check back and she will give you lots of other ideas when she is online ;)

Thanks, but I am thinking of something harder to tear apart because paper and cardboard make such a mess. Once was told to use dry pine cones or pine wood blocks. But I worry about splinters or poisonous to my rabbits

Dried pine cones are safe but my bunny just sniffed it and hopped away, guess she didn't like the smell of it or something :)

You could buy some wooden parrot toys... they can be a little pricey (I have one that cost me $15) but they do last a fairly long time.
The one I have has wooden blocks on a chain and a screw at the top. I unscrew the chain, take a few blocks off and thread vegetables onto the chain as well as the wood.
Keeps them entertained trying to get the food off a swinging toy.