lil help please

hi guys i am about to go overseas on a trip... and i am growing my first plant i will be away for 10 days and was wondering if there was a way that i could kept it watered...it is kept outside in a pot.... is there maybe a cheap dripfeeding system that i could make... just dont want to come home and see it dead... it has just started to bud... and i will be going in 20days....

any help will be much appreciated.... i am in aklnd nz... if there is maybe something i could buy from SOG​