We've started potty charting over here. It's week two, and one chart is already full, though we are still nowhere near ready for underpants. Hopefully Clark will have the hang of things quickly while he's still excited about stickers (like big sis) before we have to add a toy bribe to step up the incentive (like big bro.) This is the chart that all three kids have used.
Download girl potty chart here
Download boy potty chart here