Games to help build drive?

Hi all! I have an ACD/APBT/Boxer mix (confirmed via Embark) we adopted from an ACD rescue with really low drive. Ironically from an ACD rescue I was hoping for a high drive dog interested in sports 😅 he's been with us over a year and is family now, but what tips do you have to build on drive? He's treat motivated, good at obedience, but could care less about a fetch, spring tug, or flirt pole. He has a collieball and will sometimes herd that for a few minutes but gets bored.