A 1-Bit Full Adder (i.e. with carry-in and -out) which doesn't need a Scratch Register for intermediate results.
A 6-Bit Adder where you can select two 6-bit values to be added, one is stored in the Scratch Register SPR0-5 and one in IN0-5, OUT0-6 shows the 7-bit result (with carry-out).
Another smoke test to test all LEDs, buttons and the timer 0.
I have new examples for you: