In a discussion of what the items of power from SG might be used for last summer, I cobbled together a list of major ritual's Harry has done.  In it I generally listed the props he used, and any other significant circumstances.  This topic is to serve as a repository for that information for future reference, and as a place to collect information about similar ritual magic.  
Sanctum invocation with Demonreach:- Circle:  three foot area cleared off with short wisk broom.  Wooden-armed chalk compass to draw out a perfect circle in glow-in-the-dark chalk.
- 5 white candles set out in a pentagram aligned properly by sighting with the north star.
- Skyclad except for pentacle amulet
- KA-BAR U.S. Marine combat knife.
- Plain silver chalice
- silver former Salvation Army bell with a black wooden handle.
- his blood in the chalice with soulfire.
First "attempt" at using Little Chicago (interupted by phone call)Props needed for ritual started with "the elements first"
- Water:  Silver cup, filled with wine
- Earth:  Geode
- Fire:  Faerie-made candle, formed from unused beeswax, its wick braided from the hairs of a unicorn's mane.
- Air:  Anchored by a pair of hawk-wing feathers wrought from gold with impossibly fine detail and precision by a band of svartalves.
- Spirit:  Pentacle amulet
Props to engage the 5 senses:
- Scent:  Insense
- Taste:  Fresh grapes
- Touch:  Square with sand paper on one side and velvet on the other
- Sight:  Opal
- Sound:  Tuning fork.
Also accounted for:
- Mind:  Old K-Bar military knife as a ritual athame
- Body:  Fresh droplets of his blood on a clean white cloth
- Heart:  Pictures of loved ones
Dead Beat summons of the ErlkingLighting:  Chem Lights.
Physical circle:  Barbed Wire circle 7 feet across.  Tacked down with horseshoe shaped staples.  
Five points of an invisible star within the circle with airticles with an affinity for the Erlking at each point:
- Heavy collar like for a hunting hound
- whetstone
- small bowie knife
- flint and steel
- several steel arrowheads
Five items with afinity to Harry opposite those of the Erlking's, outside the circle
- Copy of The Hobbit
- Splintered end of his last blasting rod
- .44 revolver
- unpaid parking ticket
- Pentacle amulet
Also performed immediately after sunset, on Halloween.
Missing Rituals: (ones I need to flesh out the details on)
Summons of Mother Winter in CD
Summoning of Titania in CD.
Summons of Ulshavas
Summons in Ghoul Goblin.