Help buying gift

Hello all! I am pretty new to Warhammer in general but my friend is really into it. With Christmas around the corner, I wanted to get him something nice. Since he plays the tabletop, I thought I would get him something for that. He plays the Dark Krakens in a low league and uses some intercessors and jump pack intercessors currently. What could I get him within ~$100 that would actually be useful?