Very hard to do without the right euipment i.e. lab glassware etc. Distilled water is made by evapourating water and then condesing the steam. This could be done with a condensing column which has cold water running through it to condense the steam back into water. For the volume you require this would be a slow and tedious process. this glass ware could be got if you were very hard pushed from a school lab, uni lab etc.
Best bet is try a chemist to see if they can order it in or go through someone in a lab that you may know, they may be able to get you some. A lab would have an industrial still that would be able to make the volumes you are looking for in no time.