Agree with most comments here, but Ill make my list of good-to-have tools: callipers, Xacto knife, utility knife, set of files, deburing tool, set of tweezers, dremel, soldering iron, electric screwdriver, quality ca glue.

For consumables (screws, magnets, etc.) get few sizes of zip ties and then everything else just buy when you need. But buy bigger amounts and maybe some extra size so you have something available for future projects. M3-M6 fits fine in size/strength range of common 3D printed parts, but even if you stick to M3 screws/nuts only, the list is huge enough to defeat idea of buying something you dont know you will ever use. M3x12 DIN7991 is not rly usefull if you need M3x12 DIN912 and they both suck if you need 20 mm length. And then there is stainless steel, black, zink plated and even more options. But yeah its nice to have different types and size of screws, nuts, washers, neoudium magnets, ball bearings, jumper cables, connectors, heat inserts, double sided adheseve tape, velcro tape, paint,…actually it would be nice to live in bauhaus 😜