Reddit mentions of Fitness by Cathe Starter Hand Grip (Pair)

Stress balls. Or those hand gripper things.

For real.

Forearm size is I think relative to grip strength. When performing barbell exercises grip the bar very tight. Performing deadlifts attempting to use double overhand grips for as high weights as your grip can last.

Also search for grip strengtheners (as an example) and you'll find items that look like that. You'll have to ask around for brands to use as I would not know.

Hey, I have weak hands as well and am in the process of trying to strengthen them since I use them every day at my job. I have some suggestions to help.

1. Exercise the closing your hand motions. I have a hand squeezer thing that is like this https://www.amazon.com/Fitness-Cathe-Starter-Hand-Grip/dp/B001FB614W If you want to save some money you can also fill a balloon with flour (sounds easier than it is) and use that. Start slow with low reps and work your way up.
   
2. Exercise the opening hand muscles. They have these cool tools that help https://www.amazon.com/Dometool-Stretcher-Resistance-Strength-Exercise/dp/B071XVSTZV/ref=sr_1_7?ie=UTF8&qid=1506143530&sr=8-7&keywords=open+hand+exercise But I think using a rubber band does the same thing for less money. Again, start off slowly and work your way up. Make sure to try and do it every day.
   
3. Exercise your writs. You can get a small weight in your hand (or a can of soup for cheapies) and put your arm straight out. Palm facing down, lift your hand up. Do that a few times then turn your hand around so your palm is facing up and lift your hand up again. Try and stretch your wrists a bit after if you can. I find that I can't get a good stretch since I am too hypermobile, but give it your best shot.
   
4. Something that I just recently discovered was PopSockets. They are an attachment that you put on the back of your phone and it accordions out. I just got one this week and I have not dropped my phone since, which is a big improvement. https://www.popsockets.com/
   
   I wish you luck and hope some of these things help.

When I started playing bass trombone primarily, I got some of those grip trainers and a stress ball to work on hand strength (something like this http://www.amazon.com/Fitness-Cathe-Starter-Hand-Grip/dp/B001FB614W/ref=sr_1_3?ie=UTF8&qid=1299733892&sr=8-3)
and that helped a lot, after a while, your hand will get accustomed to having to stretch further.

Also, pick up some springy grip things or racketballs to squeeze in your spare time. Grip strength is pretty important.

Play as much and as often as you can, strength will come, pain will subside. When you pump gas, use your left hand. Get a squeeze ball or a pair of these. Stay out of dishwater for a few days. Just pressing your fingertips into the bass of your hand is a good exercise too. Play 10s or higher (string size based on high E string gauge), don't fall into the habit of playing strings that are too light or you'll be loathe to break it. Light strings just don't have the tone. And yeah, screw that high action...get a good set-up. Practice scales to get your fingers used to moving and developing strength at all angles to the fretboard. And welcome to guitar, history:s best-loved chick (boy) magnet.

Potassium really helps together with other cognitive and muscular exercises.

For the former, you can do a simple exercise such as counting down from 100. Ideally you start before proposing and count down while you're talking to her.

In the other hand (the one you're not holding a banana) you should be holding and discreetly using one of these thus ridding yourself of those common "shakes" and tremors commonly associated with nervousness.

It might not be enough though, considering you seem very agitated. One thing I've found to be most helpful when talking to people is to wear this because it not only gives your scalp and head musculature a soothing massage, it can also play MP3s. Self-affirming and positive messages should be keywords for whatever you choose to listen to.

Now, you might be thinking - where should I put my ring, considering I have no hands left unoccupied. This is a logistical problem. As you recite your numerical mantras and have your positive life-view affirmed, exercise your hand and consume a soothing, potassium-rich banana, you can simply offer the ring, placed on the tip of the banana, and you're set.

Alternatively, consider eating a Frankfurter hot dog, which is also rich in potassium and tread the ring on that. Let me know if this helps!