Ok, so I tried to get all the items. If I missed some, don't be a tuna head about it. I'm working on it.

In Maniac Mansion, if you can't take something it's either too big or it's nailed down. Man, these kids are kleptos.


Glowing Key
Why the hell is this thing glowing? Maybe it has been in a RADIOACTIVE environment. Opens the outer door to Fred's 'secret' lab.
Tools
These come in handy when you want to fix things...FOR REAL!
Cheese
Hmm...maybe Weird Ed or his hampster would enjoy these...if you don't get them before he does. However, if you do, you can exchange them for a little trust and avoid a trip to the dungeon.
Lettuce
Good in salads. But that doesn't help you stop the Meteor. Feed it to someone/something.
Glass Jar
Very useful for carrying liquids around.
Film
Don't let Michael overexpose this...it could be important.
Record
Don't play this with any antique vases around. Also repels mosquitos and rats (and about everything else).
Broken Record
Plays a sorta catchy tune.
Radioactive Water & Regular Water
Water can be found in the kitchen and Radioactive Water can be found in the pool. I do NOT suggest microwaving radioactive water...for your own good. I warned you!
Tentacle Chow
Best food available for your pet tenticle.
Fruit Drinks
Best served chilled. Nobody but Green wants them, though.
Wax Fruit
A tentacle's favorite food...very filling.
Paint Brush
Useless...unless you are an aspiring artist
Flashlight
Go figure!
Old Batteries
These power your incredibly handy flashlight.
Batteries
Good bateries are much more useful in a radio.
Paint Remover
Try to give it to Green. If he WON'T drink it, keep it so that you may help Bob Vila redecorate this aweful house.
Cassette Tape
You could record something...perhaps a DEMO TAPE?
Silver Key
Just a key.
Yellow Key
Just another key that happens to fit the Edsel.
Rusty Key
Makes escaping from the dungeon just a tad easier.
Small Key
Makes video games a lot cheaper.
Canned Goods
The Green Tenticle would probably enjoy these if he wasn't on a 'high-wax' diet.
Envelope
If you put an ENVELOPE containing a QUARTER inside a MICROWAVE and turned it on, why wouldn't it blow up the microwave?
Water Faucet Handle
Allows you to turn on the water, right?
Demo Tape
Send it to the studio to get Green into a big-name band.
Manuscript
Memoirs of the Meteor. This work is garbage, though. Have Wendy add her two cents.
Hamster
Ed's pal. I suggest you not mess with this or the piggy bank while he's around. Otherwise, he'll get a little agitated.
Card Key
Gets you a personal audience with the Meteor himself.
Radio Tube
Bernard'll get a kick out of this. After he cannabalizes the radio, you can dial long distance (collect!).
Sponge
Soaks up liquids like a Hoover vacuum.
Pepsi
DO NOT give this to Green. It is necessary to later calm down an overgrown weed.
Commando Package
Ed's package. Don't you dare open it..that's a federal offense!
Stamps
Not only does this game promote opening other peoples mail, it also suggests that we attempt to rip-off the US Postal Service. What's the world coming to?
Developing Fluid
Use this to develop film.
Badge
Why, yes, I am one of the Meteor Police!
Quarter
What a coincidence! The video games cost a quarter! Also useful for buying Pepsi at the last minute.
Dime
These four dimes would be really useful in a powerful telescope. If you save your money, you can read a number and then see a monster.
Developing Fluid
Use this to develop film.
Record Contract
Give this to your pal, Green Tenticle.

Things that DO fall into the 'nailed down or too big' category


Hunk-O-Matic
It doesn't do much for Ted, but he does look pretty good for a four-hundred year old dead guy. Give it a try.
CD Player
These aren't ordinary CD Players...these play only CRAP! But still, if you try and give one away, the kids get mighty fiesty!
Water Valve
Turns on/off the house's water supply.
Old Radio
Let Bernard check this antique out.
Microwave
One of the more fun 'toys' in the game. Try cooking stuff...radioactive water, maybe? It helps to open things stuck shut, also.
Telescope
For 10 cents, you can see whatever you want.
Tape Recorder
Well, it allows you to (wow) record tapes!
Tape Player
And with this nifty device, you can play back your oh-so-important recordings.
Victrolia
I have to agree with Sid here. "Its an old fashioned record player (I know, the record player is old fashioned, too. Just go with it)".
Video Game(s)
The games look really fun, however only Meteor Mess seems to work. Is it just me, or does Mess have the same music as Super Mario Bros. One ?
Piano
The person that said "music soothes the savage beast" obviously never heard this piano played.
Refrigerator
Is your refrigerator running? You better be running too because Edna seems to enjoy staring into the fridge at the beginning of the game.
Circuit Breakers
Don't turn this off unless you want to get captured, fix something electrical, or nuke the house. 'You mean those sirens are a BAD thing?'
Piggy Bank
Isn't Ed a little too old for this stuff? Once again, don't touch it if he's around.
Pool
Great place to lay out and catch some rays. However, you could probably get a better suntan in the pool!
Short Wave Radio
Who needs Sprint's Dime-a-minute plan when you have this thing. Reach out and touch somebody.
Radio
Ditto.
Television
Enjoy channel -13 for as long as you like. However, you'll get sorta tired of watching 3 Guys Who'll Publish Anything..."And Don't Forget The Stamps!"
Typewriter
What would YOU do with it?
Mailbox
Send and receive things here. Don't forget the stamps.
Man Eating Plant
One of the several oddities in the house (besides the family). It could be fun to climb, if it was only bigger.
Phone
For a good time call Edna at....NO THANKS!
Wires
Easy to fix if the power is off. If not....
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