Challenge

スレッド
What`s the connection between these 4 items? Can you guess?

Would you like a hint?

Too bad! No hint! (Maybe I`ll give you one in a day or two...)

UPDATE:
Okay, it`s hint time. The first letters of the items are:
1.k_____ 2. s_____ 3. o_____ 4. (Mazda) B_____

By the way, are you going to the Gifu Teragoya party this Saturday?

UPDATE:
Time`s up! I`ve put the answer in comments.
michiko michikoさんからコメント
投稿日 2012-01-23 10:08
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Maybe, they are your treasures that you have found out recently.
Perhaps, you could survive at the disaster if you would have these items!
Oh, I think that these items' first letter is 'C'!! Right?
Teragoya Otto Teragoya Ottoさんからコメント
投稿日 2012-01-23 14:16
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Nice try, but... NO!
Hiromi Hiromiさんからコメント
投稿日 2012-01-23 15:55
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They are all camping stuff, aren't they??
Teragoya Otto Teragoya Ottoさんからコメント
投稿日 2012-01-23 21:27
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That`s a good guess! But no...
ｍ＆ｋ ｍ＆ｋさんからコメント
投稿日 2012-01-27 11:35
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I guess,I think 4items connection is a gasoline.
Because kettle use at kitchen,(maybe)drum contains some oil,and burn use the gasoilne.

But,sorry...I can't understand 2.
Teragoya Otto Teragoya Ottoさんからコメント
投稿日 2012-01-27 13:15
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ANSWER:

1.kettle 2. snare 3. oil 4. (Mazda) Bongo

They`re all kinds of DRUMS.

You can see another kind of drum tomorrow night (Sat. 28 Feb.) at our Gifu Teragoya party - Japanese taiko drums. If you`re free, please come along. Details are on the Gifu Blog.
Hope to see you there!