I have a recommended tools and resources page over at Maker Hacks but I realized this niche needs a different list so as I use/write about something I will add it to the list here and start linking out to places where you can get the same item or similar.
Hand Tools
Saw
Stanley Knife
Craft/X-Acto Knife
Wire Brush
Sculpting Tools
Cutting Mat
Straight edges and rulers
Dremel
Pin Vise
Sand paper
Handheld Sanders
Proxxon Hotwire Cutter
Handheld hotwire cutter
Heat Gun
Electronics
Soldering iron
Desoldering station
Air filter/extractor
Wire
Shrink wrap
Solder
Wire stripper
Microcontroller boards
PPE
Dust Mask
Eye Protection
Glue
Hot Glue Gun
Elmer’s
Tacky Glue
Super Glue
Accelerant
Mod Podge
Spray glues (Super 77)
Sculpting
GreenStuff
Fimo
Sculpey
Milliput
DAS
Spackle
Sculptamold
Painting, Paints and Lacquer
Cheap Brushes
Good brushes
Brush Cleaner
Cheap Paints
Matte Medium
Ink
Flow Aid
Branded miniature paints
Primer
Wet Palette
Cheap Airbrush + Compressor
Nice Airbrush + Compressor
Portable USB Compressor
Airbrush cleaner
3D Printing
Resin Printers (for details, miniatures)
Resin
FDM/Filament Printers (for larger items, big props, terrain)
Filament