Innovation tokens is such a fantastic concept. When I brainstorm products I like to make a simple plan, and then map out "Whats new to me" to help me decide what I am really trying to accomplish. Prototyping a new idea is very hard and requires a lot of iteration, using a new tech complicates that even if its better. Alternatively, if the prototype is purely for fun, then new tech can be a great value add, as even if the prototype takes a turn for the worse (i.e. too hard to finish), you get satisfaction from learning some new tech. I've noticed since being very intentional about it, side project work has become considerably more enjoyable.