Step 1: What you will need
Masking tape NOT DUCT TAPE (apparently WD-40 melt the glue on duct tape, or so i found out)
A glue stick
A hot glue gun
Hot glue sticks (4-6)
WD-40 or another spray on lubricant
A paint brush
Thin plastic sheeting (I got mine from a box of a figurine)
A Stanley knife or pen knife
A template for your mold
( http://fc07.deviantart.net/fs24/i/2007/335/2/f/Papercraft_Rupee_Template_by_Cristophine.jpg )
Step 2: Making the mold
Print out the template for the rupee, and cut it out as pictured.
Using your gluestick, stick the cutout paper template onto your plastic sheet.
Cut out the plastic template.
Using the edge of a ruler, bend the plastic along the black lines. It should finish up looking like picture 5.
Remove the paper from the plastic, make sure not to leave any residue or your rupee may stick to the mold when you get to filling it.
Using small strips of masking tape join the edges together to give you two joined halves of the mold as shown in the picture. After you have taped all of the joint in place, strengthen it with another layer of masking tape.
Using a stanly knife or your scissors to make a hole in the top of the mold just big enough for the tip of your hot glue gun.
Using WD-40 lightly spray your mold, but try not to get any on the outside of the mold.
Using more masking tape seal up the mold securely.
You have now finished the mold part of this instructable!