Luckily, there are many ways that you can amuse yourself in these situations.
Sorry, I unfortunately do not have my camera in the room out of respect of my roommate's privacy, so I hope that my illustrations will help.
Step 1: If you can, go for a walk!
Hooked up to machines and tubes? Often times, your nurse can help you make them portable by getting a roller cart for an IV or other medical device. I was surprised when they were encouraging me to walk with my chest tube, but it felt SO GOOD afterwards, and definitely helped break the monotony.
Step 2: Ask for a Snack
It never hurts to ask for a snack, and they will usually oblige as they want you to stay as happy and comfortable as you can in your present situation. I found out last night that my floor has chocolate ice cream!
Step 3: "Nurse, I mustache you a question, but I'll shave it for later"
Simply draw a fake mustache on a piece of paper and lightly tape to the tube sticking out of your nose. The mere IDEA has kept me amused all week.