Needed simple/quick and dirty AA battery holder without springs, so I made this one that uses two M3 screws and nuts to hold battery in place securely and I could connect my alligator clips to.

Printed mine with PETG CF using 0.6 nozzle @0.4 layer height in about 15 minutes, nuts maybe will need some force  to go down a slit, also there's small cutout for positive end of the battery.

STEP file included in case you want to correct or change something.