I spent some time this evening revising TinyTimer Duo.  I made both relays capable of handling AC loads.  I also added a second input, and switched the chip in the design to an Atmega328p-PU which is the same as what is in some types of Arduino boards.  This makes it fully compatible.  The inputs are on the A/D lines which makes them useful for more than just simple switches.  Each input sources 5v and is protected by a resistor.

Here is what the prototype board looks like.  It’s approximately 4×2.  It’s a little more spacious then some of my other designs.

prototype board