For making it rain indoors:
The practical pump spray bottle.
Spray bottles are a useful aid in a grow room. A pump spray bottle can be used to apply nutrients directly to the leaves. The absorption of fertilisers via the leaves gives the plant direct access to the nutrients, which means that they do not have to be transported through the entire plant.
The setting ring on the head of the bottle allows you to infinitely vary how fine the spray is, from ?jet? to ?fine mist?.
Spray bottle, 1 litre
Capacity: 1 litre
Weight: approx. 120g