I'll second the ExpertVoice discount site. I've been using it for roughly 10 years now. For those that are not familiar with it, it's a site that allows companies to share their "employee" discount with other companies, groups, and affiliations. Go to the site, create an account, then join "teams" to gain certain discounts. The discount percentage will fluctuate and so will the companies each team has available to them. The more teams you join, the bigger the list gets, and the list of available discounts is extensive. I'm a state government employee and the primary missions of the division I work for are wildland fire control and SAR. I qualify for a few teams which include Wildland Fire / SAR, US Forest Service, and State Government employee just to give a few ideas on how one could qualify.
Also, check out ID.me if you're a government, medical, military, first responder, or teacher. There's some good deals there as well. It's a bit harder to navigate but still worth it.
Sorry if that all sounds like a scripted sales pitch, it definitely is not. I've saved more money using the discounts than I'd like to admit. Mostly because it sheds light on how much I've actually spent on s***.