The ornamental design for toilet seat adaptor and potty, as shown and described in FIGS. 1–4.
FIG. 1 is a front perspective view with of the toilet seat adaptor and potty;
FIG. 2 is a front view of the toilet seat adaptor and potty;
FIG. 3 is a top view of the toilet seat adaptor and potty; and,
FIG. 4 is a side view of the toilet seat adaptor and potty.
The broken lines showing portions of the toilet seat are included for the purpose of illustrating the toilet seat and form no part of the claimed design.