Tactical rocks for Jump Assault Marines?

I want to convert basic Assault Intercessors to Jump Pack troops, and will be printing all the jump packs. I’ve been searching for some “tactical rocks”, or similar basing bits, to print to elevate them and make them more like the official ones. I haven’t found any that I love yet, so I thought I’d ask if anyone had any they like that you could point me at? I can do resin or FDM.