As on Anet A8/A6 I dumped the springs under the heatbed and exchanged them with silicone dampers.
These are the models of the mold. You need 5 M3-screws and nuts to assemble the mold parts. It would have been better to use 2 more screws but it works quite good as it is. You also need 4 M4-screws and nuts (I used the ones used for fixing the heatbed :-) ).
Note: The heatbed-cables will be between damper and heatbed. If you are anxious you can cut the damper with a knife to provide a channel for the cables.