I've thought about something in RS gold and believed my idea may make the match more colourfull. Present scenario: should you combine items which are not supposed to be combined, you get standart"nothing interesting happens".
Any meals + any neutral NPC = a word of thanks. Any item (jewellery, armor)+guard = salute in the guards round. Item is seen only, guards can't drop it. Player can't offer weapons or armor lower in level than guards (if guards are supposed to wield steel weapons, iron and aluminum can't be offered)
Cash + non agressive npc = commerce. Farmers can supply an information or an item (shears, axe, bucket), men - a few tools, girls - a few clothing. Once item is displayed, npc can't drop it. Any dye sheep = colored sheep. All rams begin attacking sheep and player returns to normal some time later. That is almost all.
Most of the skills in RS don't have too much'skill' involved. I would like to suggest miniature games that in fact require more ability. These mini games will not just demonstrate that a person is really'proficient' but they will also offer a fun alternative to regular training.
(NOTE: still have to consider good xp per item per Agility level and a good speed of items per second per how long you stay, tips from you guys, with this or another miniature Old school rs gold game,are highly valued but they will only be incorperated into the seggestion if they make sense to me so argue your point clearly)