Top one or two shots Seagram's 7 with and garnish with a lime wedge. This is a drink where having the specific brands it calls for makes a difference in the taste; if you can't find Seagram's probably better to stick with a whiskey ginger.
Top one or two shots of tequila with grapefruit soda. The classic brand to use is grapefruit-flavored (“Toronja”) Jarritos, but you could try it with any brand you like, or DIY with grapefruit juice, seltzer, and simple syrup. Garnish with a lime wedge.