So…. Koji has started to play some, I’m happy to report. He rolls his treat ball around some (not sure if he’s hoping food magically appears from there when he’s well aware it’s empty or just enjoys it). But, he’s really taken to digging and scooting. My blanket, specifically. I thought it was the blanket, anyways, so I put it on the floor (since I’ve been trying to keep him off bed due to the peeing). He wouldn’t look at it when it’s on the floor. I have since noticed he will also scoot and dig on the sheets, too, although not as excitedly as he does with the blanket. He will even rearrange and chew a bit at the blanket. It also mostly seems to be in the same small area of the bed.
I’m not sure what to make of this. Does anyone have a rabbit that will only “play” in one spot? I gave him t-shirts in his crate that I saw him digging on briefly last night. But his new obsession is getting on the bed to try to burrow on that side. Still ignoring the diggy box I made, of course! 
I was just wondering if this location preference is typical. I’m hoping I might be able to entice him to be so interested in a different spot that is not my side of the bed – if not no big deal, I may let him up occasionally for some very supervised digging. I don’t mind the destruction of my blanket, in fact it’s a woven cotton thing which has a few loose strings anyways. I just don’t want to let him up here unsupervised until he’s proven he’s done having accidents on both the bed and the hardwood, and I feel bad saying no when it clearly brings him great joy to dig and scoot the blankets underneath him. He did it so vigorously earlier he actually fell off the bed (his spot is right on the edge.)