Yes, but we already know tulpas don't actually exist.
Only in a very specific sense of "exist". Do hallucinations exist? That-which-is-being-hallucinated does not, but the mental phenomenon does exist.
One might in a similar vein interpret the question "do tulpas exist?" as "are there people who can deliberately run additional minds on their wetware and interact with these minds by means of a hallucinatory avatar?". I would argue that the tulpa's inability to do anything munchkiny is evidence against their existence even in this far weaker sense.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.