Eh I know that the "results" from this board might be pretty skewed from normal, but it seems like I see lots of posts about grandparents who do everything from have their own showers... to buy a few pieces of baby gear... to outfit a whole nursury in their own home.
My own MIL bought a fairly nice stroller and some nursury bedding and stuff. None of it has been used. To her credit, she hasn't whined about it not being used... but she DID go ahead and buy it and tell us she was buying a crib. I don't think she did though (yet?).
My mother hasn't done anything to outfit her home for a baby. She does live 5 hours away, so if she did... that would be *extra* crazy. The most she does is give us things (like an outfit here or a toy there), some of which is passed on from older people who know me from my hometown church.