You will need a reasonable microscope (but one from a home science kit may be good enough) and then find a protocol for staining chromosomes. This one  - using onion cells - is similar to work I did at high school (but still calls for acid and stains that may or may not be readily available to you). Bear in mind that chromosomes are only tightly packed and visible at particular stages of cell division - more info at the link below. … itosis.pdf