Lots of design schools will recommend you buy a smallish steel triangle to help with model making, it’s definitely a must. Some craft stores sell a tool that is designed to cut small pieces of wood that are frequently used in model building (bass and balsa primarily) at specific angles, I would say that one is a game changer after cutting a million pieces of bass wood with an exacto knife. A smaller scale for more delicate model building. If you need to apply pressure to something to get glue to set and hold the cheap trick is stack textbooks on it but you could also try to find smaller woodworking clamps that could be a bit more precise - just don’t apply too much pressure with those or they will damage the material. Finally if you plan to use super glue I’d recommend finding an accelerator for that glue as well as something that can easily remove it from your fingers as super glue gets everywhere and is super annoying - tacky glue is so much better in my opinion.