I've been feeding treats from a bowl and not using my fingers, as I don't want to teach the Girls that fingers=food. The bowl I've been using is a coop cup, and sometimes the girls peck my finger by mistake.
I saw a lovely orange melamine bowl on Ebay the other day and it arrived this morning. It's perfect!
Firstly, it's orange and so matches my Cube and other chicken paraphernalia. Secondly, it has a little cut out bit which means I can hold it and hide my fingers at the same time; Thirdly, all three girls can fit their heads in at once... I've just done a test run!