I moved recently and was aware that I have too many stuff, so I wrote this application to manage my things, I hope it can also help you:)

With the Housekeeper, you can manage your stuff by the simplest way: input or import the item, and then to tag it. The tags are customizable, they can be:
1. The place where you put your stuff: for example, [boxA], [boxB], [under the bed] ...
2. Item types: for example, [glass], [food] ...
3. Other properties: for example, [gift from Sharon], [spent out in summer], [to be thrown away] ...

For example, to manage your travel stuff, you can use the following tags to mark your items:
[Ready], [to buy] ...

The application provides powerful query capabilities, you can easily find your items by following ways:
1. Query by the keywords: use one or more keywords which are contained or not contained in the item descriptions
2. Query by the tags, use one or more tags which are applied or not applied on the items
3. Query by a combination of above conditions

Items can be input one by one, or you can import them from an existing text file. Your current item list can be imported with only slightly modifications or without any modifications. 2 kind of formats are supported to be imported:

Format1:
--------------------------
item6
item7

tag1:
item1
item2
item3

tag2:
item2
item4

tag3:
item1
item5
--------------------------
Note: item6 and item7 have no labels after being imported.

Format2:
--------------------------
item6:
item7
item1:tag1/tag3
item2:tag1/tag2
item3:tag1
item4:tag2
item5:tag3
--------------------------
Note: If no tags, the colon can be omitted, for example item7.

After importing, the results of these two examples are the same.

I believe you can find more features and scenarios.