RefMe

RefMe
see the review on general apps - really useful auto citations and bibliography creation referencing tool based upon mobile cameras.
https://www.refme.com/#/

Pinterest

Lots of us are using Pinterest and finding it useful for sharing creative ideas based upon sharing collections of images on 'pinboards'.
Make an account and try it out.
Duncan Cameron's is very interesting: https://www.pinterest.com/brokensharkcage/
I have created a pinboard following the construction of my solid upright bass: https://www.pinterest.com/danjshaw/electric-double-bass-project/