The shortest distance between two points is a straight line.
Tricks won’t train your voice.
Gimmicks can be costly.
Some things look like tricks but they are part of vocal pedagogy.
Fully understanding how and why things appear to work takes the magic out of the equation.
Common “Helps”
Bending forward for high notes can sometimes help singers to get into middle voice without cracking. It doesn’t work for everyone. When it does work, it gives you hope.
Most singers start out with chest voice, head voice and an uncontrollable crack in between.
I have been there. Hated it!
It’s been said that bending forward is a psychological thing that make you think you are going down for the note, not up to it.
Physically, it affects abdominal muscle tension and may get the abs to relax. Some singers flex the abs too much and that can be an impediment.
When bent forward, the muscles in the back of the neck hold the head and the muscles in the front ot the neck tend to relax.
Too much tension in the neck, jaw, tongue, or abs can work against a singer and thwart the progress of eliminating the crack in the voice.
Flexing the abs may help to focus energy there instead of in the throat. Too much throat tension can cause strain or pain. Over a long enough time, blisters on the vocal folds can form which can turn into hematomas (blood blisters) and then into callouses called nodules, (not nodes).
Nothing Supplants Training
Quick fixes, tricks, and gimmicks may help sometimes, but their effects are short-lived.
Laryngeal stability and proper vocal fold adduction with the coordination necessary to achieve these is the long-term solution to the physical aspects of singing freely and with one voice.