When the chart was filled the children realized we had over a hundred items! We lined them up next to the chart to come up with a final count.
On a different day we asked the children to again help us count a large quantity of little vehicles. Our rule was we couldn't count them and couldn't use a hundreds chart. One child knew that 10 ten frames was the same as a hundreds chart, so we placed them on these instead.
We are going to continue to challenge our children by using large numbers. 10 frames and hundreds charts can be easily found online and printed. Why don't you consider counting some collections at your house using these strategies?