A tube the size of a chapstick container that holds advil.
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Ok simple enough all you need is an empty container of chapstick and some advil pills (not the liquid gells the red round ones)
Now take of the plastic lable if you want too. ( I did) Now pull off the bottom knob and unscrew the bottom peice from the plunger thing. Then take out the plastic plunger thingy ma bob. (if any one has a better name for it let me know lol) I recomend washign the tube, cap, and bottom peice is soapy water and let it dry.
Now just cut off the long skinny part and put the bottom peice back on. Make sure you remove that thingy ma bob.
Now fill the tube up and put the cap on and your good to go :)