3D Printed Lock Stuff
The home 3D printer provides the amateur locksmith a significant advantage over those without. These links are only organized by category, not preference or recommendation (ie: No Particular Order!).
Hand Holders
https://www.thingiverse.com/thing:3115194
https://www.thingiverse.com/thing:1386781
https://www.thingiverse.com/thing:3271556
https://www.thingiverse.com/thing:4977770
https://www.thingiverse.com/thing:4584249
https://www.thingiverse.com/thing:4901835
https://www.printables.com/model/237950-sparrows-various-tools-practice-lock-holder-handle
https://www.printables.com/model/355053-locksport-lock-cylinder-holders
https://www.printables.com/model/639581-kik-and-mortise-lock-holders
Bench Holders
https://www.thingiverse.com/thing:224069
https://www.thingiverse.com/thing:4093656
https://www.thingiverse.com/thing:3761207
https://www.thingiverse.com/thing:5169795
https://www.printables.com/model/139569-lock-cylinder-holders
https://www.printables.com/model/76088-lock-cylinder-holder-remixed
https://www.printables.com/model/281042-lock-holder-for-euro-cylinder-locks-handheld-vise
Picks & Keys
https://www.thingiverse.com/thing:1016119
https://www.thingiverse.com/thing:5161338
https://www.thingiverse.com/thing:1744475
https://www.thingiverse.com/thing:264891
https://www.thingiverse.com/thing:1214013
https://www.thingiverse.com/thing:703681
https://www.thingiverse.com/thing:606542
https://www.thingiverse.com/thing:1123385
https://www.thingiverse.com/thing:2786049
https://www.thingiverse.com/thing:3847621
https://www.thingiverse.com/thing:1132632
https://www.printables.com/model/408266-lockpick-tool-holder
https://www.printables.com/model/515364-parametric-lockpick-holder-for-windshield-wiper-in
Demos
https://www.thingiverse.com/thing:2153185
https://www.thingiverse.com/thing:2058932
https://www.thingiverse.com/thing:5157538
https://www.thingiverse.com/thing:2377207
https://www.thingiverse.com/thing:5138558
https://www.thingiverse.com/thing:152527
https://www.thingiverse.com/thing:5074397
https://www.thingiverse.com/thing:880668
https://www.thingiverse.com/thing:5156185
Other Tools
https://www.thingiverse.com/thing:5459886
https://www.thingiverse.com/thing:5145400
https://www.thingiverse.com/thing:3140402
https://www.thingiverse.com/thing:197990
https://www.thingiverse.com/thing:2235594
https://www.thingiverse.com/thing:4912677
https://www.thingiverse.com/thing:1091544
https://www.thingiverse.com/thing:3301246
https://www.thingiverse.com/thing:2863083
https://www.printables.com/model/629273-locksport-gutting-stationpick-holder
Puzzles
https://www.thingiverse.com/thing:2925409
https://www.thingiverse.com/thing:2823962
Less practical but just as interesting
https://www.thingiverse.com/thing:2922427