You can create one tiddler that has all your tags. Then the tags will be ready when you need them. You can even
hide the tiddler a little by giving it a title like $:/mytags .
If you have lots of tiddlers, you could use a text editor to format them like:
title: mytaglist
tags: tag1 [[tag with space]] tag2 [[some other tag]]
Give it a file name with a tid extension (e.g. mytaglist.tid). Then drag and drop into your target tiddler.
HTH