iCopyFilenames enables you to copy one or more filenames from explorer to clipboard with a single click. Likewise it allows to paste a filename from to the selected file or files and so effectively rename them. If you want more advanced settings then it offers extra options if while clicking to the relevant new explorer menu (Copy filename(s)) you hold down the SHIFT key; in that case a new dialog will appear that allows you to set options and also preview the contents in clipboard.