Exploring complex 3-dimensional spaces such as the ever-changing vegetated environment of a vertical farm, is a challenging task to automate. Whilst aerial robots are excellent at observing these types of spaces, they are limited in battery life and their rotor blades can be cause for safety concern. This paper introduces an alternative solution in the form of a lightweight, helium assisted drone. The BlimpleBee is thought to be the smallest of its kind at 0.55 m diameter and a total weight of 31.02 g, is able to navigate complex, restricted environments with efficiency. Its slow speed dynamics and hovering ability makes it ideal for inspection type tasks. Through a series of experiments, the performance of the BlimpleBee was characterised and shown to be a viable and promising solution for indoor inspection tasks provided some of the challenges around airflow disturbance can be overcome.