This mould has been designed to create a candle holder, pencil tray or tray for all sort of knick knacks. If you drill holes into the slumped glass piece, this may turn into a joss stick holder.
It has an interesting topography which could lend itself as a template to create interesting pre-fabricated components such as curved stringers etc.
All convex slumpings require careful positioning of the glass plus a good control of the slumping temperature, to stop the glass from ‘grabbing’ the mould.