I recently came across a few gdevelop templates and decided to test them and showcase how they works. They all worked pretty good to me.
HOW TO GRAB AND DROP OBJECTS WITH LINKS GDEVELOP TEMPLATE
SIMPLE INVENTORY SYSTEM TEMPLATE In Gdevelop
GDevelop 5 | Character Fading In-Out Plus Fading In And Out Template
Multi Language Menu Template In Gdevelop 5
NB: With the exception of grab and drop objects with links the rest of the templates can be found in gdevelop examples.
Please share any templates you have that has not been added to gdevelop examples yet.