How to make the model refer to itself?

Question

Django

Preamble:
There are 3 models:
Potato, Eggplant, Tomato
And there is one connecting model - Vegetable (it is for the online store catalog, because there can be different goods in the basket, and on the main one, here it is used everywhere, you can say the proxy model ( without proxy attribute),

class Veggies(models.Model):
   tomato = models.OneToOneField(Tomato, verbose_name='Томат', on_delete=models.CASCADE, blank=True, null=True)
    ...

Essence of the question:
I need to attach gifts to the Vegetable model (it is clear that this is an abstraction), the same vegetable.
A reference to itself is not something, because There may be multiple gifts.
Let the tomato, potato, eggplant refer to a vegetable? or how else is it possible? Help plz.

Answer 1

All done in one line

gifts = models.ManyToManyField('self', blank=True, symmetrical=False)

Answer 2

If you need to attach a vegetable to a vegetable, then you should think about the fact that a vegetable + a gift is already a different abstraction, which means a different model

Answer 3

Create a second table: id, vegetable_id, vegetable_gift_id. Make vegetable_id and vegetable_gift_id pair unique