Found a few more items that I need help identifying.  Any idea what these are or who put them out?

20.  There's a secret panel that slides down in the back to let you see where each key is. **Update: It's Bob Solari's "Ultra Sensory Perception"

21.  At first, I thought it was SilKola, but it's not.  The silk is permanently wrapped around a metal bar.

22.  No idea.  **Update: It's "Illumin-Ace" by Paul Bernhardt

23.  Did this come out of a magic set?  It's 4 or 5 inches tall.

24.  I actually have the instructions for this one, but they aren't in English.  **Update: This is Magiro's "Water Wands"

25.  It's some sort of animated matchbox.  It fits perfectly in the stand (made in England) so that it won't start opening too soon. **Update:  It is Pat Conway's "Sym-Pat-Rise"

26.  Is this a gospel magic trick?  Jumbo cards (one with Jesus, maybe the other is the Easter Bunny?) and two black plexiglass sheets.

27.  The white sleeve fits over the paddle.  The opposite side of the paddle is blank, and the opposite side of the sleeve is missing the Ankh.

28.  Wonderful Hot Rods.  Both have dots on all four sides.  One is obviously ungaffed, but the other has some dots half-painted, so you see one color from a particular angle, but a different from another angle.  **Update:  This is Chris Smith's "Dragster"