Looking for "portable" undertakings for 3 and 7 yr out-of-date?

My youngest is being admitted to the hospital on Thursday and I need some simple entertainment. ideas for my 3 yr old and 7 yr old when they call on the hospital. Does anyone have some suggestions on activities and crafts to keep a 7 yr out-of-date boy and 3 yr old girl amused in a hospital room?
My 3 and 6 year old love Uno and Guess Who? Fun, easy games...
my kids always have playdo, bear or some coloring books that are portable
Answers:    Oncology huh? Sorry to hear that. Hope all go well for you and your little one.

You might consider having them play "doctor" and using a toy stethoscope or something. You could also consider a simple treasure hunt with little items undetected in the room - away from your little ones bed or something. It is difficult, though. My youngest was in a couple times due to asthma, and his elder sister (age 4 at the time) struggled with being bored. They often will hold DVD players available in the room, you may try one of their favorite movies. Just some thoughts. Good luck.

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