I usually use toothpicks for stripped pickguard or strap button screw holes, and solder wire for tuner or TRC screw holes.
Former Ric CEO John Hall once suggested putting some drops of water into the stripped hole and waiting for the wood to expand and dry, no glue, no toothpicks, no plugs. I've never tried this. Maybe it's good for Ric's maple bodies, pretty sure it won't work on pine.