LNER Pacifics, Heavy freight engines, WDs, S160s and the Great Central
009 Narrow Gauge...I like the Bowaters system (I grew up in Sittingbourne), Ffestiniog, Harz...
Face masks are available for sale at https://www.etsy.com/uk/listing/838911243/steam-train-and-vintage-transport-face?ref=shop_home_feat_2.
Many of my designs include trains or train-related themes, so please have a look and see if there is something you like.
I am having a go at making my own locomotive/ railway themed prints for use on clothing, home decor and tech. Have a look at https://www.redbubble.com/people/ontherails?asc=u for my range of products.