keeping in the swing

Because of work commitment I have to limit my golf time. The result is that my game deteriorates with absense of real game time is there any exercises I can use to keep my swing as supple as when I play more regular.Putting is easy to simulate but full swing shots are more difficult in the confines of your home or garden. Anyone got any tips.

little practice swings with a weighted club

or in a mirror or like i do(in a window at night when you can see yourself) make very very very slow swings watching yourself making sure you do everything right, find a tour player that swings like you and copy his swings in the mirror or window

Okay, I have to tell you what I did. Have you seen the swing plane tool that you can make at home? Let me explain. First you need 1 old golf club. 2 small flashlights. (like the mini mag-light, or maybe even 2 small cheap laser lights). Duct tape.
1. Cut the golf club about 10 inches ....25 cm from the head .
2. Overlap and tape together so the end result is just a really short
club.
3. Place one flashlight on the shaft close to the hosel, and the other
in the grip hole. you might have to cut out partial grip.
4. Now turn on both lights, and stand next to a wall and use the
baseboard as your line of site. As you slowly take a back swing
the flashlight on the hosel will show you your line on the take
away. Then the light on the grip will point down your target line
when you have the club paralell to the ground.
5. But....the part I like best, and that has really grooved my swing
plane, is that the grip light should pass down your target line
backwards from target....to ball position....to take away.
6. Since you have shortened your club, you can practice this
anytime inside the house.
Does any of this make sense? I bet some out there can explain this unique little tool better than I can.

they sell one of these, but alot more expensive, comes with a mat and what not, but this is the lot cheaper way, ive been thinking about making me one, ill probably use lasers from a store

it is a good way to groove your swing plane no doubt

Thanks for the tips I have seen these weighted clubs but wasn't sure what the affects might be but using a mirror to help sounds simple but effective. Given the time I will attempt to make the mechanism drtree216 mentions and see how I benefit from it.