Step 1: See what each figure is built from.
Every one of the seven figures is the same basic shape, a rounded oval head with a thin straight handle sticking out of it, a bit like a small table tennis paddle or a comma. Only the rotation and the handle's exact position seem to differ from figure to figure at first glance.
Step 2: Turn each figure so the handle points the same way.
If you mentally rotate every figure so its handle points straight down, the rounded head above it can lean toward the left or toward the right of the handle. This leaning direction does not change no matter how much you rotate a figure, since rotating a shape never swaps left for right. Only flipping the figure over, a mirror image, can swap which side the head leans towards.
Step 3: Sort the figures by which way the head leans.
Doing this rotation check on all seven figures shows that figures 1, 4, 5 and 6 all have their head leaning to the same side of the handle once turned to a common direction.
Figures 2, 3 and 7 have their head leaning to the opposite side instead, which means these three are mirror images of the other four, not simple rotations of them.
Step 4: Identify the odd ones out.
Since a genuine rotation can never turn a shape into its mirror image, figures 2, 3 and 7 cannot belong to the same family as 1, 4, 5 and 6. These three are the ones that stand apart from the rest.
Final Answer:
The three odd ones out are figures 2, 3 and 7.
\[ \boxed{2,\ 3,\ 7} \]