Help! Triplet Dad needs a helping hand

Wife and oldest daughter going on a trip from March 18, 2016 to March 26, 2016. During that time my 3 year old triplets will be coming into my office with me. Need someone to watch them while I'm working from 9AM to 4PM. I have a dedicated office room for their entertainment and will provide lunch. Triplets are 3 years 4 months old, and are identical twin boys and a girl. They are fun and for the most part amuse themselves with their own games and toys. All 3 are also potty trained. Father and grandmother are on hand and will freaquently drop by to play with them.