Word for feeling in the mood to experiment

Solution 1:

I would use adventurous. It is commonly used in this situation.

Solution 2:

Word starting with T

_{Since you mention t in your comment to Chenmunka...}

tem·er·ar·i·ous [tem-uh-rair-ee-uhs] adjective

reckless; rash.

Alternatives

saucy adjective ˈsȯ-sē, ˈsa-

2 a : impertinently bold and impudent

b : amusingly forward and flippant

Usage: "Not today my good man, I'm feeling saucy."

Saucy in your example would be a saucy word choice.

Solution 3:

"I'm feeling "enterprising" today?"

enterprising: ready to embark on new ventures; full of boldness a d initiative.

Also, consider "intrepid" and "in a trying mood."

intrepid: fearless; daring; bold.

I am feeling in a trying mood today, and will go another way."

On fairly different levels, how about "frivolous," "frilly," "frothy," and "transgressive"?

I am feeling frivolous today, and will go another way."

I am feeling transgressive today, and will go another way."

Solution 4:

Experimental!

"Feeling experimental, I put the odd looking delicacy to my nose and sniffed".

Or

"I am feeling experimental today, and will go another way"!

Solution 5:

In response to your comment about a word starting with t, how about this?

I feel like trailblazing today

That implies going where you have not been before.