Home Made Bunny Toy Ideas

I've run out of them So i've come to RU for help
My brains dead today, I can't think of anything else, ussually every other day the bunnies get something new to play with (which is soon ruined), but now i'm stuck with ideas

What home made toys do you give to your bunnies?? I need ideas please

Also I have these biggish cardboard tubes:

They are too small for the bunnies to fit through and I'm not able to come up with any other things to do with them for the bunnies. Any ideas would be appreciated??

Thanks

fill them with hay and/or treats :wave:

My brains not at its best after a day on duty at a university open day, but those tubes surely have potential. :wave: If you cut them into smaller sections could they be tossable? Or if cut into lengths of about a foot they could be jumps. What size are your bunnies? Have you given them an old paper tissue box to play with (didn't really work for my lad, as he ate the box, not the hay).