Here's a terrific video on non-standard measurement.
Here's a recording sheet for measuring items around the classroom in non-standard units.
Here's a series of station activities for measuring in non-standard units.
Here's a student booklet for measurement with nonstandard units.
Practice nonstandard measurement with these forms.
Here's an activity develops a K–12 student’s skills in measurement by using a pool noodle to measure objects. The activity encourages students to consider features that are useful when developing or using a measurement tool.
Here's a set of 20 images that give students practice measuring the height and width of various pictures with paperclips.
Here's a nice informational page on nonstandard units of measure.
Here's a set of supplemental lessons on nonstandard measurement of weight from the Math Learning Center (Bridges Curriculum).
Here's a set of supplemental lessons on nonstandard measurement of length from the Math Learning Center (Bridges Curriculum).