Sql Server Select Into Variable

I have the following code in one of my Sql (2008) Stored Procs which executes perfectly fine:

    CREATE PROCEDURE [dbo].[Item_AddItem]
        @CustomerId uniqueidentifier,
        @Description nvarchar(100),
        @Type int,
        @Username nvarchar(100),
    AS
    BEGIN

        DECLARE @TopRelatedItemId uniqueidentifier;
        SET @TopRelatedItemId = 
        (
           SELECT top(1) RelatedItemId 
           FROM RelatedItems 
           WHERE CustomerId = @CustomerId
        ) 

        DECLARE @TempItem TABLE
        (
            ItemId uniqueidentifier,
            CustomerId uniqueidentifier,
            Description nvarchar(100),
            Type int,
            Username nvarchar(100),
            TimeStamp datetime
        );

        INSERT INTO Item
        OUTPUT INSERTED.* INTO @TempItem
        SELECT NEWID(), @CustomerId, @Description, @Type, @Username, GETDATE()

        SELECT
            ItemId,
            CustomerId,
            @TopRelatedItemId,
            Description,
            Type,
            Username,
            TimeStamp
        FROM
            @TempItem
END
GO

So the question for you guys is is there a possibility to do something along the lines of:

DECLARE @TempCustomer TABLE
(
   CustomerId uniqueidentifier,
   FirstName nvarchar(100),
   LastName nvarchar(100),
   Email nvarchar(100)
);
SELECT 
    CustomerId, 
    FirstName, 
    LastName, 
    Email 
INTO 
    @TempCustomer 
FROM 
    Customer
WHERE 
    CustomerId = @CustomerId

So that I could reuse this data from memory in other following statements? SQL Server throws a fit with the above statement, however i don’t want to have to create separate variables and initialize each one of them via a separate SELECT statement against the same table…. UGH!!!

Any suggestions on how to achieve something along the lines without multiple queries against the same table?