>>5704231Those DIY kits are about 15 x 11.6 x 13 cm in size and nendoroids are about 10 cm tall so I think they would be a little small, which is too bad because I was considering getting one as well.
Here is a post from someone who bought one.
http://myfigurecollection.net/blog/28716And as you can see in this picture the bed here would be too small to fit a nendo unless you removed the legs or lower body.