Sixpence in the Bride's Shoe
A sixpence (silver coin) placed in a bride's shoe is believed to bring her good luck. Possibly related to the last line (less well known than the rest) of:

Something old, something new
Something borrowed, something blue
And a silver sixpence in her shoe

Each of the above is believed to bring good luck and a happy marriage. "Something old" for continuity with the past and with her family; . "Something new" to bring hope for the future; "Something borrowed" from another happily married woman gives the new bride some of their good fortune; ‘Something blue’ may be to symbolize the bride’s purity for various reasons (the Virgin Mary is usually represented dressed in blue); a sixpence in the bride's shoe should bring wealth.

Wedding ‘favours’
Brides give selected female wedding guests ‘wedding favours’ or small gifts from the wedding reception table after the wedding meal is over and near the end of the wedding reception (party). Traditionally sugared almonds* were given, but sometimes other small decorative items from the Wedding cake or table decorations replace these.This is done to bring luck to the wedding and give luck also to the guests.
*Sugared almonds: representing good health, happiness, wealth, fertility and a long life, possibly date back to the Greek legend of lovers Demophon and Phyllis