If you are looking to gain flexibility (IE: Touching your toes.) I'd suggest finding a Hot Yoga class (Which doesnt have to be AT a gym.) I think the real name for it is bikram yoga.. or.. somethin sounding similar. It's just yoga.. with the added bonus of like.. 100+ degree heat. It may sound a lil sissy but it REALLY helps with flexibility issues.
At the gym lately when I am runnin on a treadmill I see a lot of commercials for that insanity workout crap. Maybe if you don't feel like venturing out, pick up somethin like that to do at home. Now... you may not get the EXTREME results that the bogus people show on the commercial but I can verify that over half of the stuff that they show them doing workout wise, is what my boyfriends personal trainer has him doing for half of his training program.
It took me forever to get into enjoying my time at the gym. (I had to resort to finding techno remix's of some video game music to help inspire me to move my fanny.)
If you don't already.. I'd toss in some planks. (Side and front) into your routine. Once you feel you've mastered side planks, do side planks with some hip action... Pardon my really unofficial termonology!
If you DON'T know what a plank is..
http://www.plank-exercise.net/plank-...se-videos.html
Once you've got the hang of holding a plank position... start a marching plank, where you lift your legs alternating.
Side planks are a bit more difficult for me personally.. they are also, not easy for me to explain so..
http://www.voyagerfitness.com/bodywe...es-side-plank/
Once you've mastered a side plank, try doing a side plank while lifting and lowering your hips (but do not touch the ground with them. If you do.. do not REST on the ground!)
Should you ever choose to get into large weights, I'd suggest somethin' to work out your grip. Not sure how your grip is being you are a freelance illustrator, but if you arent very good at ambidexterity it'd be easy to work on while you game and are... leveling somethin that doesn't require much hand activity (like a wow tradeskill like first aid where you just sit and stare at the screen.)
Good luck, friend!