DB pullover and press for triceps. On the press part, keep the elbows close to the body using a hammer grip throughout. Can use a BB, but for some there is too much pressure on the wrist/forearms and elbows. In any case, choose whatever is best for you.
Those tiger dips (push-offs or push-backs is another name we use for them) offered by SF are excellent for a complete tricep development. You can adjust the resistance, either making it easy or extremely hard. Slight shifts in body position can do that. Also a great stretch when you try touching the back of the neck each rep. Use a bar, table, chair, wall or whatever. Try keeping the elbows close to the body.The lower the height you start from the more difficult it is. Great exercise to do at home. Good Luck.