i had some paper cups left from my daughters party last year i have filled one with grass and clover from my garden, and poked holes in in various bits of it, just big enough for me to pull the grass and clover through, now my piggys are lovin it they been busy pulling n eatin the grass out of there, should i be concerned about them eating the paper cup ? if theres no problem with them havin this as a toy id recommend it to anyone they love it!