One of the niftier things at TINGS was quite a simple one. Kato were giving away their new re-railer at their Diorama Circus. It comes on a sprue and clips together, forming a simple little device that you drop on the track and just roll a loco or wagon over to put it on the rails (a bit like the re-railing track sections).
(https://www.ngaugeforum.co.uk/SMFN/gallery/154/8-140925003432.jpeg)