# How can I do Charles' law experiment?

You could actually make a large piston with a plastic disposable syringe of approx. $50 - 100$ $m L$ volume. Draw in air to full volume at room temperature, i.e. $50$ $m L$, seal the tip, and drop the syringe in an ice water bath.
Is $V$ $\propto$ $T$? Of course you need several constant temperature water baths at (say) ${0}^{\circ} , {10}^{\circ} , {20}^{\circ} , {30}^{\circ} , {40}^{\circ} , {50}^{\circ}$ $C$, to get meaningful results.