Tentacle
Get a flier from the rack and a help-wanted sign from window. Pick up dime and go into Dr. Fred's office. Once in office, pick up Swiss bankbook. Notice there's a Booboo-B-Gone inside drawer. Take it. Open the portrait and leave.
Now open the grandfather clock. Bernard goes to the secret lab. They'll meet Dr. Fred and he says about Bernard. The Chron-O-John will be begin and it's fall. It can be trouble. After he talks, go upstairs again.
Getting a Crowbar
You can't follow him, but come back later. Go upstairs, and close the door. Pick up keys and leave the room. Go outside, through the parking lot. Here, give the keys to man in ski mask. He'll gives you a crowbar. Go inside.
At the foyer, use it with gum in dime stuck in it. He's automatically taken. Chew it. After you have two dimes, go back upstairs again. Use a crowbar again with candy machine. There are some quarters, so take it.