Aftershock

Aftershock is a flavoured liqueur created by the Jim Beam Group in 1997, in Canada. Aftershock comes in five varieties, Red Cinnamon, Blue Cool Citrus, Black Spiced Berries, Fizzy Orange and Silver ( Silver is Apples and Red Bull )

Aftershock is 30% to 40% ABV or about 80 US Proof.

There is a myth surrounding Aftershock that Aftershock crystallised in the stomach and liquifies the next morning causing another bout of drunken stupor. This however is clearly untrue however cool it might sound.

Grand Marnier

Grand Marnier is a French liqueur brand. Their most well known product is Grand MarnierCordon Rouge, an Orange flavoured liqueur created by Alexander Marnier Lapostolle in 1880.
It is made from a blend of Cognac brandy, distilled essence of bitter orange and sugar. It is 40% ABV or 80 proof in USA.

Grand Marnier is a French Brand of liqueurs. The most well-known product is the Grand Marnier Cordon Rouge, an orange flavoured liqueur made from a blend of Cognac, brandy, distilled essence of bitter Orange and sugar. The Cordon Rouge was created in 1880 by Alexander Marnier-Lapostolle. It has 40% ABV.
Grand Mariner is full of rich, complex flavours and intrigues of the Cognac, and makes cocktails taste. A Grand Mariner is a blend of Cognac and Triple Sec, it's not a traditional Curacao, it's a similar orange liqueur.

Vodka

Vodka is an European clear distilled alcoholic drink that has been one of the most popular drinks across the world .

You'll find it to be the most popular spirit in drink making because of it's neutral taste and absence of flavour and colour.

Vodka often replaces Gin in many traditional cocktails

Vodka is known to be good for the heart, and if consumed in moderation, can prove to be good for cardiovascular health

Note that these days there are flavoured Vodka available in the market too, and some cocktails do make use of them.

Eggnog

Eggnog or milk punch is a rich chilled sweetened dairy based beverage made with milk, cream, sugar, egg yolks, and whipped wgg whites which gives the eggnog the frothy texture and its name. Both commercial and home made eggnog are popular and are served with cinnamon or nutmeg. Commercial manufacturers of Eggnog tend to add Gelatin to thicken the product while using less egg and cream.

Cinnamon Stick 1 piece

Cinnamon is a very popular spice used world over, obtained from the inner bark of the trees of the genus Cinnamomum. Cinnamon is used in a wide variety of cuisines, sweets, breads and tea and is a dominant flavour in Cola too. Cinnamon trees are grown for two years befiore harvesting them by cutitng the stems at ground level, leaving stumps of trunks from where new shoots grow back and the tree growns again. The cut down stems are immediately processed, the outer bark is scraped off and the stem is beaten evenly with a hammer to loosen the inner bark which is then pried off in long rolls, dried and cut into pieces for sale.
Both Cinnamon Sticks and Cinnamon Powder is used in cocktails to add that sweet and woody flavour to the drink. Alternatively if you are not comfortable with the Powder and the recipe doesn't explicitly asks for Cinnamon Powder you can use a drop of Cinnamon Oil instead.
Note: Cinnamon Leaf Oil has a musky and spicy scent, and a light-yellow tinge that distinguishes it from the red-brown color of cinnamon bark oil Cinnamon leaf oil is lighter, cheaper and ideal for regular use. Although cocktail creation is an art and you can experiment with both.