Well let's start off with the fact most decorations don't move so you need to lock your self in chastity to prevent any erections, I'd say plug your ass too to make this more fun, the next part get a diaper because you'll need to go toilet but you're a decoration so you're not allowed to move! Now for a pose pick a pose you want to be stuck in for hours just remember if you're sitting down with the but plug in there might be more fun for you
and lastly duration I think 20 hours is a good start keep going until you do 48 hours of no moving