Simply print 2 arms (they are mirrored) and secure to lid with a short length of 3mm filament, if you feel ambitious and have a spring (see attached picture for spring type) this will go between the two arms directly threaded through with the 3mm filament pin.

Two grabber spoons are needed and these are also attached using  lengths of 3mm filament, the supplied spoons are for M & M's , however feel free to adjust the size of the grabber spoons for picking up Nuts, Malteasers, Popcorn , Grub-worms….etcetc