I've posted a sample report below, which you can add to your Lansweeper installation by following
these instructions.
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tsysAssetTypes.AssetTypename,
tsysAssetTypes.AssetTypeIcon10 As icon,
tblAssets.IPAddress,
tblAssets.Lastseen,
tblAssets.Lasttried
From tblAssets
Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
Where tblAssets.AssetID Not In (Select tblAssetRelations.ChildAssetID
From tblAssetRelations) And tsysAssetTypes.AssetTypename = 'monitor'