Ent,
I bought my convertible cot bed online, can't remember which website, but u can check out mothercare etc. Eh I suppose if u lower the bed height to it's lowest (about 1 foot off the floor) and then keep the side panels up, with bumper cushions surrounding the sides, it could act as a play pen?? But of cos playpens are still safer for active babies, with their nylon sides rather than hard wood panels. Actually I used to like playpens cos i think they are safer, there are no gaps unlike cots/cot beds which may accidentally trap babies' limbs.
However my own personal experience with playpen didn't last more than 8-9 mths, cos my boy would scream murder the moment we put him in!! I ended up buying a play yard where one of us adults can go in together with him to play, let him get used to it, by and by he could play inside by himself when we needed to walk away for a while, but that also didn't last long, he just hated to be left alone lor. But then again, I remember my little sis loved the playpen when shr was a baby though we had to keep it when she was 1.5yrs cos she managed to climb and almost fell out!! So also depends on kid's temperament.
Simp,
I think it's also cos I've been working there for more than 10 yrs, so we all know each other very well [IMG=http://www.singaporemotherhood.com/forumboard/clipart/happy.gif]