> LSD is something everyone should seriously consider doing at least once in their life.

Yes, but no matter how great it sounds, you still have to consort with drug dealers to find it. Not sure that the risk of arrest (or worse) is really worth that reward.

Some closely related psychedelics that don't require any interaction with drug dealers:

Hawaiian Baby Woodrose seeds:

http://www.erowid.org/plants/hbw/hbw.shtml

Morning Glory seeds:

http://www.erowid.org/plants/morning_glory/morning_glory.sht...

Both of the above should be available from ordinary gardening suppliers and/or plant nurseries.

They contain LSA (Lysergic acid amide), which is closely related to LSD (Lysergic acid diethylamide).

And another common psychedelic you can pick from a forest or a meadow:

http://www.erowid.org/plants/mushrooms/mushrooms.shtml

There are many, many others as well:

http://www.erowid.org/plants/plants.shtml