"Easiest" would be my Kahr P380 or my 1910 Browning in terms of size and overall non-obtrusiveness.
Easy-enough but far more comforting would by my Kahr MK 9 or PM 9 or a J frame .38.
For the record, I don't care for the LCP (yes, I had one). Trigger is poor and, compared to the others, is very hard to shoot well. Apart from that, it's ok for what it's designed to do.
Anything larger would not qualify as "easy". Not that larger pieces have their merit. They do. And then some.