What would you recommend - from both a points-effective and a cost-effective standpoint - as a small Imperial Guard detachment to Ally with my power armor armies (that's Space Marines Codex, Blood Angels Codex, and Sisters of Battle). I don't have a lot of interest in the Imperial Guard as Imperial Guard, but it seems like it would be fun - and Forge-the-Narrative-y - to have a small Imperial Guard force supporting my elite power-armored units.
But I don't want to spend a lot of points or a lot of money on it.
What do you recommend?