Also try the bucket of fish fill. This is a very elementary fill that one of my teachers told me about.
Its a 16th note triplet fill that is generally played on 4.
1+2+3+Bucket Of Fish.
or
1+2+3+tri-pl-et-&
You can crash on the one if you feel it.
Another one to keep in mind is the sha-ka-dom.
1+2+3+4e&
Or
1+2+3+Sha-Ka-Dom
I generally play sha-ka-doms on the snare, first tom, and floor tom. No crash on one to keep the music moving.
I know these are really basic fills. Its good to pull these out for the lesser esperienced players.