Sponge Canary - Pair (FT)

These canaries can be compressed in a small space, and expand instantly on production. You can show a flat Folding Top Hat, spring it open, and produce the canaries from this. Or perform a startling transposition, placing the canary in a paper bag, crushing it, and having it vanish, then reproduce the same canary (apparently) from another prop, like a Chick Pan that has been shown empty.