There is a crowdsourcing effort underway here:
http://igg.me/at/trackratlas/x/11018951It is for an Echo compatible locating tag and home locator plug-in units. The idea is that you plug in one of the Atlas units in several rooms of your home and place the tags on items you want to tag - keys, purses or wallets, remotes, etc. Then you can ask Alexa - where are my keys? and get an answer like - they are in the bedroom.
From the Indiegog FAQ section:
Will this work with my Amazon echo?
Yes! It will work with any Amazon Alexa enabled service like echo, Amazon TV, and more! It works on both iOS and Android phones.
I signed on - delivery is project for June 2016.
I'm posting this here because there may be interest from other Echo owners and (full disclosure) they have a referral program.
Take a look and see if you're interested.