Blot Hammer, Blot Spear
Performing a blot with a scram is a norm, there were times when,experimentally, we replaced it with a hammer, as a symbol of Thor in a Thor blot. Did it change the outcome in a different way to use of a scram? Not apparently. Did it change the aesthetic? Yes. As a symbol of Thor it made the blot more his, in a symbolic way. The scram would have been more earthy in the sense that the ancestors would have been using this type of item. If it was important to use the scram to cut the asperge broom (pine/yew/spruce etc) and then for continuity use the same instrument in the ritual, then the hammer cannot obviously create that. For an Odin blot, we used a spear. It isn't attested historically, though it really seemed correct. With the ubiquitous nature of the axe in northern hands, I'm wondrous how this might have been worked in. Could the axe have been used in place of a scram? I don't know.