I have a blanket pinned on a wall, If I have a lava lamp close to it, would it catch fire if I only turned it on at night?

I wanted a background to my fishtank, so I pinned a blanket to the wall, but I wanted to put a lava lamp on the same edge the tank is on so I was wondering if I left it on over night, would it be okay as long as I turned it off in the morning? or do I have to put it somewhere else?
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