Well... what do you think you have the ability to make? If you've never scripted with SRL before then obviously anything simple would be a great project. Why not start off with a power (fisher/miner/woodcutter) to apply knowledge with: finding on-screen objects, animation detection, inventory counting, item interacting, and anti-bans.
Once you've become comfortable with all of that you can step it up a notch, take the previous script and add secondary actions, like banking at a nearby bank for knowledge of handing banking procedures. Made a power-miner? Why not a miner & super-heater? Power-chopper? Why not a chop & fletch or chop & burn? Made a power-fisher? Why not a fish & cooker? (there's always trees nearby).
Just use your imagination, start with something, anything simple and work your way up. Doesn't matter so much the demand of the script, for now what matters is how much you can learn.
