I got this https://www.amazon.co.uk/Multicolor...8&qid=1491070559&sr=8-6&keywords=aurora+light
Stands on the floor and has internal moving lens the the light moves on the ceiling.
In general slow changing is nicer and chiller than flashing lights.
Each to his own I suppose, but since a scary experience when some kids panicked in a strobe lit club many years ago, I've always been wary of powerfully flickering lights.
About 1 in 10 are susceptible and mdma might make you more susceptible.