Apistogramma agassizii are delightful small South-American cichlids who's personality can really liven up a medium sized tank. Mine are the double red colour variation, which is one of the more common ones and certainly the cheapest to buy that I have come across.
They are well worth the consideration if you have mature aquarium looking for a new spotlight species. Just don't keep them with shrimp!

My favourite fishy stuff! (yes these are affiliate links :) )

Lights
Nicrew Classic LED - https://amzn.to/3fG3Uv6 - Traditional led light that's got a nice high output in a white/cool colour range. Makes plants look extra green.
Nicrew SKY - https://amzn.to/3Ktn45U - really nice light for natural looking tanks, also the one I use for filming.

Filters
Pat Mini - https://amzn.to/3fE1u0k - popular for a reason, just a superb little filter thats great for shrimp tanks and fish alike.
ASAP - https://amzn.to/3nBuytp - the old favourite and the one i return to most frequently.

Air Pump
AP-3 Kit : https://amzn.to/34UMA3q - Great little air pump, not a silent runner, but has been very reliable for me.

Tanks
Scaper 45 - https://amzn.to/3KBxG2H - a lovely high quality tank that comes with a super strong light, and a decent enough hang on back filter - perfect for newbies and scapers alike.

My filming stuff
Camera - Cannon 200D - https://amzn.to/354OLlc - nice camera, easy to use.
BigTripod - Manfrotto befree - https://amzn.to/3GLXDdj - pricey but super sturdy and can take being knocked over a lot by clumsy operators.
Lil' tripod - https://amzn.to/355WmQs - can't pronounce the name but it's been a good tripod for filming things on tables or when I have tanks on the floor.