The hagada tells us that in every generation, a person must see himself as if he had personally gone out of Egypt.  If so, why didn't our Sages suggest how to visualize or recreate the experience?
 
It is not possible to actually see ourselves as having left slavery. Rather, we should feel our obligation to do the mitzvot (commandments) as the Israelites felt when they left Egypt, as they switched from being slaves to serving Hashem. We can be freed (b'nei chorin) from physical or spiritual slavery.