Moving this from the comments section to the build log section where it should have been.
Started looking into how exactly I'm going to connect the Pi to the load sensors. Since the Pi doesn't have any real built in analog ports available will probably go with a simple A->D setup. Will test different options, but high on the list is a simple RC setup to measure the charge discharge times to get a rough value back. Should be good enough for the simple game approach I'm planning.
Also haven't decided if I'm going to go with a scale and steal the load sensors or just one of the inexpensive load sensors available all over the place. Will depend on if I can find a good sale on scales :) Either way the generals are the same, hook to the load sensor, record the resistance, compare it to a known value and judge the weight.
Did start to work out some of the physical needs like "buttons" to "tare" the containers, lock a weight for things like emptying a bin before weeks end, and reset at end of week to "submit the score"
Of course, may just make it a touch screen interface. Still have all the stuff from the baby phone that proved to actually be a small display with a built in resistive touch screen. Should be easy enough to hijack that in.