I've been thinking about a) an electric dinghy, and b) treating ourselves to a steering wheel.
Our main usage would be anchored/moored boat to dock, or boat to sandbar for the dog. (We're currently dog-less, actually.) Any additional usage -- longer distance sightseeing, etc. -- could be easily tailored around whatever the propulsion system might support.
The AB Alumina or the Highfield Classic center console RIBs -- or similar -- look to be what I'm thinking of, but also way fancier than we would care about. And they seem to want an arm and a leg for those, too. OTOH, they do sort of illustrate what's in my mind. Light weight (comparatively) would be a goal.
The Elco electric outboards look like a decent propulsion option. Either the 24V EP-5 or the 48V EP-9.9 would seem viable. A couple Group 31 AGM batteries in a 24V system would seem to be most economical, even though that path would weigh more than a L-Ion power supply. Four Group 31 AGMs in a 48V system sounds like beginning to get weight-prohibitive. The two L-Ion power supplies weigh much less; in fact both 24V and 48V weigh the same 55-lbs. The 24V L-Ion power supply cost doesn't put me off... but the 48V version is getting on toward serious bucks$$$.
The RIBs I mentioned recommend 20-30 horsepower. I don't so much care about going fast, don't necessarily care about planing... but I wonder if the 5-hp/24V version on a ~300-lb RIB (plus motor, pax, and "stuff") might be a bit tooooo tiny. In fact, maybe even the 9.9-hp/48V system might be too puny, too.
Chesapeake Bay, USA