I used the Plantastic watering bottle.

They are a ($5-10) each at a local hardware store, look around, they are well hidden. Here is the URL as well so you can see what they look like. Its a water bottle with a spike and a cap to slow the flow

Plantastic! The Plant Waterer that REALLY WORKS! Automatic watering for unattended houseplants

My other plants were so so, the one that had this was sweet, and only used 1/2 the water.... also your trip is short enough to water heavy and be fine.

- :rasta: