i've finally found my ideal lava lamp : r/Lavalamps
LAMZZP Lava Lamp Purple Lava Lamps for Adults Kids, Silver Base Motion Lamp with Orange/Yellow Wax in Purple Liquid 13.5-inch,Cool Stuff for Bedrooms Birthday Gift Christmas Decorations : Amazon.ca: Tools & Home
Original Lava Lite Lamp Blue Liquid Purple Wax | eBay