Sounds like we'll leave it open for now, in case we can get something more (either more photos or rearing it, if you happen to be able to find it again @Hejor1). If not, I think inconclusive is best as I'm not sure we'll be able to ID it successfully.
Of the 350 named Australian species of Psychidae, only 22 have been reared to allow those species to be identified from the case structure and head and thorax patterns, see http://lepidoptera.butterflyhouse.com.au/psyc/psyc-cases.html and this does not look to me like one of those. @Hejor1 : Heather : any chance you can rear it to get an adult for an ID in due course ?
1,908,789 sightings of 21,425 species from 13,225 contributors CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.