Bonding aluminium and steel

[MetalMilitia]

Odd question but does anyone know what type of adhesive you'd use to attach aluminium to steel?
I was just going to use a hot glue gun but I don't think it'd be sticky enough. The aluminium doesn't need to take much weight but a strong bond would be preferable.

Welding, riveting or bolting aren't suitable due to the shape of the metals being bonded.