I second CrazyPotato's suggestion as well matsu, if you want to do doodles on saturday... it'd still count as an art night because that's what you did.
Keep Saturdays ambiguous between the two. If you have personal art mojo, do that, if you honestly have no idea what to draw but the initiative is there, doodletime.
Devious Comments
Anyday.
even if it means no request
siphon-i vote the 2nd!
...*sigh*
Art Night
PS: