Here is a decimal street lapbook - would be great to add to a workbox and practise making numbers. Goes with the Math-U-See Math program.
I LOVE this and one day will have to make my own. I did make the house's and castle out of cardboard which we use at the moment but this is soooooo much nicer.
http://theischysfishys.blogspot.com/2008/12/decimal-street.html has used the same idea but made it slightly differently. Don't you just love the way one idea is adapted to suit each family.
Or you could make it as a poster (all so shown at the same blog) and use it as a poster centre.