My vote goes for figure-8 ILS touch and goes on a dual ILS runway (ie both ends - takeoff, clean up, reversal and down the opposite ILS). Single pilot, hand flown, raw data, minima set to 50ft and 150m (so one might actually stay on the runway during the reconfigure for the touch and go), nominal crosswind.
Simple reason .. this is the best I have found for honing and smoothing basic IF skills ... plus it's great fun once the cobwebs are swept out and the pulse rate goes down a bit .... (737) .. pity I haven't had the chance to do any in the past several years ..
.. I don't need anyone to laugh at me ... I can do that by myself ..
... and Centaurus has seen me when my skills have been down more than a bit after a break from flying ...