Results from commissioning and/or prototypes for new small (HL-)LHC experiments

To the surprise of many physicists, no beyond Standard Model particles have been discovered so far at the Large Hadron Collider (LHC). Hence, the search efforts for physics beyond the Standard Model have to be significantly broadened and extended also towards smaller experiments. In this short review, selected results from the commissioning and prototype development of multiple new small-scale experiments at the LHC are presented. The focus is set on the latest results from the FASER experiment, as well as a short overview of the progress of the SND@LHC, MATHUSLA and milliQan experiments.