how to beat bunny boredom...my bun is just over a year and is quite inactive.

He's a recently neutered holland lop (been a week). I let him out for hop time but he doesn't explore the run or the space. maybe he's bored I have toiled paper tubes, those jingly cat balls, a tunnel...he likes his tunnel but not much else. How to get him more active?

http://bunnyapproved.com/product/trixie-treat-ball/

wanted to get him one of these

what are some other ways to put a "hop in his step"? Can anyone recommend interesting activities or toys for a bun? Anyone have a crinkle tunnel?

Barry has a crinkle cat tunnel and enjoys running through it, rolling it and jumping over it. He's much larger than a Holland lop though. I've purchased puzzle boards from WWW.bunnyapproved.com and those are a big hit. My son's bun jovi is a Holland lop and enjoys finding the treat with these.