Here is a useless collision that could be thought of as glider bowling.

`x = 20, y = 21, rule = B3/S23`

15bo$15bo$15bo3$14b2o$14b2o$18b2o$14b2o2b2o$14b2o9$b2o$obo$2bo!

I can't do much with that, but it is rare to find a collision that preserves all the components. The initial cluster is "natural" in the sense that I got it by generating small starting seeds. Before we had examples of stable reflectors, it was speculated that a reflector could be a magic glider-preserving self-restoring cluster (with the parts back in the right place unlike this). It is very unlikely once you get beyond blocks and blinkers, and those don't work as reflectors.

I am not sure the space has been fully explored to find clusters that are not exactly the same but can be used for later collisions with single gliders. Add catalysts, and eventually you get a stable reflector, but catalysts also take up diagonals. Anyway... I am trying to find something useful this way. Still trying.

Here are some collisions between gliders and natural clusters that produce a glider, an spaceship and not much additional debris. I don't know if all or any are new. Is anyone else looking for these? They are not very useful but could be part of a slow synthesis.

MWSS + glider

`x = 11, y = 11, rule = B3/S23`

6b3o2$3b2o$2bo2bo$3b2o4bo$8bobo$8bobo$9bo2$b2o$obo$2bo$!

LWSS + 2 gliders

`x = 16, y = 12, rule = B3/S23`

13bo$13bobo$13b2o2$6b2o$5bo2bo$2o3bobo$2o4bo3$5bo$4bobo$4bobo$5bo$!

LWSS + glider

`x = 13, y = 10, rule = B3/S23`

5b2o$2o3b2o$2o3$3b2o$2bo2bo$2bobo$3bo6b2o$10bobo$10bo$!

LWSS + glider

`x = 13, y = 10, rule = B3/S23`

5b2o$2o3b2o$2o$10bo$10bobo$3b2o5b2o$2bo2bo$2bobo$3bo$!

LWSS + glider

`x = 13, y = 9, rule = B3/S23`

11b2o$10bobo$6b2o3bo$5bobo$5b2o5$b2o$obo$2bo$!

LWSS + glider

`x = 17, y = 9, rule = B3/S23`

11b3o$b2o4b2o$obo4bobo$2bo5bo3$15bo$14bobo$10b2o2bobo$10b2o3bo$!