This is an interesting one for us as part of Kinderloop's M.O is to reduce paperwork and unnecessary printing, the portfolio/end of year book being a perfect example... Parents and extended family now have a digital history/portfolio in their hands! That being said, we totally understand that many centres/parents still want to be able to print some form of book and we are looking into it. The first step has been completed, if you look in your settings online, there is an 'album' tab that allows you to search on a child and download high res images, what you do with those images is then up to you (scrapbook, usb to parent, disc etc)
You can also switch on the ability for families to print their child's feed including a simple photo portfolio option! Simply switch this on in your settings > options.
One of the issues we face is security, allowing the parents access to this feature would allow them to download group images and then possibly share them, remember the content of your Kinderloop is owned by you and thus you control it, not us and not parents.
I hope this helps explain our position, we are always listening.