It is recommended to spend about $150 on a wedding gift if you are a close friend or family member of the couple, and this is a good minimum for a member of the bridal party. The more expensive the bridal party costs are, the bigger the gift should be.
If you are attending other festivities such as an engagement party and a bachelorette party, follow the 20-20-60 rule. Spend 20 percent of your budget on each party gift and the remaining 60 percent on the wedding gift. If you are bringing a guest to the wedding, bring a bigger gift to account for the fact that the couple has to cover the costs of that extra guest.