Use this printable as a template to make Montessori sand paper numerals. One easy DIY method of making the printable cards tactile is by dropping dots of school glue along the shape of the numbers. Alternately, you could use a glue stick to "trace" the shape of the numbers and sprinkle very soft sand from the craft store on top. Other ideas are to use the number cards as a template to cut out felt in the shape of the numbers.
Print on card stock.