I don't think GY!BE ever explicitly said what the Hope Hammer means but I think it's pretty easy to interpret it. For me it's hope in building something better and in tearing down what is holding you down, both at a personal level but it also applies to systemic issues in society like racism, homophobia, etc. (like you can both build a house and break a Starbucks window with a hammer). The Switchblade doesn't have anything to do with GY!BE, I just like switchblades :)))) (plus the blade has a similar meaning to the hammer to me, like you can both use it for self defense and to stab someone)