A long balloon, a needle-free syringe and scissors.

1. Find a long balloon and find the end of the round bottom of the long balloon.

2. Cut the bottom of a short balloon with scissors, about 3~5cm.

3. Find a syringe without a needle and pull out the piston in the syringe.

4. Cut off the upper part of the syringe with scissors, 1~2cm is enough.

5. Then, pull open the open end of the previously cut small strip balloon and put it on the upper end of the syringe. The balloon material is elastic and can be firmly attached to the syringe wall to prevent air leakage.

6. Now you can suck the liquid with a simple dropper.