Toddler house bed?
Plans are here: https://www.thedesignconfidential.com/2 ... house-bed/
I was thinking of using 4x4s, but finding untreated 4x4s are tough, unless you go the cedar route which is $$$ (anyone know where to find cheaper 4x4's that are untreated?). I guess the other option would be to sister two 2x4s and adjust the plans as you're getting 3"x3.5", but aesthetically I dont think this would look good (rounded edges of the lumber would look bad when sistered together).
Basically, most of these that I've seen on the internet (they're all over the place if you look at pinterest and instagram) are using 2x4s, but any thoughts on how stable this would be? I figure a single 2x4 post would be wobbly once put together?